为您找到与高一必修一英语重点知识相关的共200个结果:
随着高中新学期开学,高一新生步入高中,开始新的高中生活。重视衔接,做好过渡高一新学期伊始,以下是读文网网小编整理的高一英语学习文章,希望能够帮到你!
1.come up走近;上来;提出
[典例]
1). The little came up to the stranger and showed him how to get to the police station.
小男孩向陌生人走去,并告诉他去警察局的路。
3). It is certain that the question will come up at the meeting. 这个问题在会议上一定会被提出来的。
5). I am afraid something urgent has come up. 恐怕发生了什么急事。
[短语归纳]
come across邂逅 come about发生 come at向…扑来,攻击 come from 来自
come out 出版;开花;结果是 come up with想出
come round 绕道而来 come down落下,塌下
[练习] 用come构成的词组填空。
1). The hunter walked across the forest when suddenly a bear _______ him.
2). The magazine __________ once a month.
3). I wish you can ___________ to England on your holiday.
4). The engineers has ______________ new ways of saving energy.
5). They ___________ an old school friend in the street this morning.
答案: 1). came at 2). comes out 3). come over 4). come up with 5). came across
2. make use of 利用;使用
[典例]
1). You ought to make good use of any opportunity to practise English. 你应该好好利用机会练习英语。
[短语归纳]
make good use of 好好利用 make full use of 充分利用 make the best/most of 充分利用
[练习]
1). 要充分利用一切机会说英语。2). 我们要很好地发挥她的才能。
答案: 1). Make full use of every chance you have to speak English.
2). We will make good use of her talents.
3. such as例如;像这种的
1). Such poets as Keats and Shelley wrote Romantic poetry.
有些诗人, 如济慈和雪莱, 写的是浪漫主义的诗歌
2). Wild flowers such as orchids and primroses are becoming rare.
兰花和报春花之类的野花越来越少了
[练习] 用such as或for example填空
1). I like drinks __________ tea and soda.
2). The report is incomplete; it doesn’t include sales in France, ________.
答案: 1) such as 2). For example
4. play a part (in) 扮演一个角色;参与
[典例] 1). She plays an active part in local politics. 她积极参与地方政治活动。
2). She played a major part in the success of the scheme. 她对该计划的成功起了重要作用。
翻译:中国在当今世界扮演着重要的角色。
China is playing an important part/role in the world today.
[短语归纳]
take part (in sth)参加, 参与(某事物 for the most part 整体上; 通常; 多半
the best part of sth(某事物的)绝大部分(尤指一段时间) for my part就我来说
[练习] 中译英
1). 有多少国家要参加(世界杯赛)?
2). 对我来说, 到哪儿吃饭都无所谓。
答案: 1). How many countries will be taking part (in the World Cup)?
2). For my part, I don't mind where we eat.
6. because of 因为;由于
[典例]1). They are here because of us. 他们是因为我们来这里的。
[短语归纳]
because of 是复合介词。
because 是从属连词,引导原因状语从句。
[练习] ⑴ He came late to school again _______ he got up too late.
⑵ The girl cried __________ what the teacher said.
⑶ we have to cancel our trip _________ the bad weather.
7. base on …以…为基础
e.g The movie is based on facts
7.ever before 从前 8.even if/though 即使
9.be based on 以……为基础 10.over time 长期以来
11.in the early days 在早期 12.the same as 相同于
13. Believe it or not信不信由你
14. a number of +N. 许多,大量. 作主语时, 谓语用复数.
the number of +N. …的数量. 作主语时, 谓语用单数
Eg A number of people have read this novel.
The number of people here is 50.
V重点句子 (旨在提供句子结构等所需材料)
1. Which country do you think has the most English learners?
[解释]do you think/believe/expect/ find/know/suppose 作为插入语,放在特殊疑问词后,其它内容紧跟其后并用陈述语序。
What time do you expect we will come and pick you up?你希望我们几点来接你?
What do you suppose he will do after he hears about the good news?
你认为他听到那个好消息后会做什么呢?
Why do you think their team could win the football match? 你认为他们队为什么能赢得那场足球赛呢?
2. Today, more people speak English as their first, second or a foreign language than ever before.
[解释] than ever before 常与比较级连用,意为“比以往任何时候更”。如:
The stars were shining brightly in the dark sky, and the night was more beautiful than ever before. 繁星点缀在夜空里,夜晚比以往更美。
[练习] 中译英
1). 简看起来比以前漂亮多了。 2). 雨下得比以前更大。
答案: 1). Jane looks much prettier than ever before.
2). It's raining harder than ever before.
拓展:(1)引导让步状语从句的引导词还有 although, though, no matter when/what..., whenever, wherever, however 等等。
(2)as也可以引导让步状语从句,但要把其表语、谓语或宾语前置,且前置的单数名词不可以加冠词。
①Even though you achieve great success in your work, you should not be conceited.
即使你们在工作中取得了巨大的成绩,也不应该自满。
②Whatever you do, do it well.
不管你做什么,把它做好。
③However hot it is, he won't take off his hat.
不管多热,他都不摘下帽子。
④Girl as she is, she can go alone in the darkness.
尽管她是个女孩,她敢一个人走夜路。
[即境活用1](2007·浙江)Many of them turned a deaf ear to his advice, ______they knew it to be valuable.
A.as if B.now that C.even though D.so that
解析:even though=even if “即使”,引导让步状语从句。
答案:C
2.Believe it or not, there is no such thing as standard English. 信不信由你,(世界上)没有什么标准英语。
(1)believe it or not 信不信由你。常在句中做插入语。
(2)no such thing 没有这样的事情。such与 all, no, some, any, few, little, many, much, several, one 等词连用时,应位于它们的后面。
①Believe it or not, he refused to accept our offer.信不信由你,他拒绝接受我们的帮助。
②There is no such street in the city.这城市没有那样的街道。
③He said he didn't have time or made some such excuse.他说他没有时间或别的诸如此类的借口。
[即境活用2](2009·安徽)I’m amazed to hear from my school teacher again. ______, it is ten years since we met last.
A.In a word B.What’s more C.That’s to say D.Believe it or not
解析:句意:想不到又一次收到学校老师的来信,信不信由你,我们上次见面还是在十年前。in a word总之;what’s more而且;that’s to say也就是说;believe it or not信不信由你。
答案:D
3. with的复合结构
[应用3](1)—Come on, please give me some ideas about the project.
—Sorry. With so much work ______ my mind, I almost break down.
A.filled B.filling C.to fill D.being filled
解析:with复合结构中,work和fill是主动关系,且表示正在进行,因此其后要用doing结构。
答案:B
(2)John received an invitation to dinner, and with his work ______, he gladly accepted it.
A.finished B.finishing C.having finished D.was finished
解析:根据work和finish是被动关系,可以判断出答案。
答案:A
(3)______ two exams to worry about, I have to work really hard this weekend.
A.With B.Besides C.As for D.Because of
解析:根据句意,此处应采用“with+宾语+不定式”。
答案:A
(4)It was cold outside, the boy ran into the room ______ his nose red.
A.to B.on C.in D.with
解析:这个句子考查with的复合结构的用法,用“with+名词+形容词”做状语表示伴随情况。而to、on、in作为介词则没有这种用法,故排除A、B、C,答案为D。句意是:外面天气很冷,那个男孩跑进了屋子时,鼻子红红的。
答案:D
语法讲解
引语的概念(以课文88页为主,本文重在方法提炼与巩固)
直接引述别人的原话,叫直接引语 直接引语通常都用引号括起来
用自己的话把别人的话陈述出来,叫间接引语
间接引语在多数情况下都构成一个 _宾语从句#p#副标题#e#
DirectSpeech | IndirectSpeech |
She said, “I like singing. ” | She said she liked singing |
She said, “I am waiting for a bus.” | She said she was waiting for a bus. |
总结:直接引语是陈述句,变为间接引语时用连词that引导宾语从句.从句中的人称,时态,指示代词,时间状语,地点状语等相应变化.(见课本88)
补充:
Direct Speech | Indirect Speech |
She asked, “Have you seen the film?” | She asked me whetherif I had seen the film. |
He asks, “Are you a doctor, John?” | He asks John ifwhether he is a doctor. |
She asked us, “Where are you going to get off?” | She asked us where we were going to get off. |
He asked them, “Who gave you a talk yesterday?” | He asked them who had given them a talk the day before. |
总结 直接引语是一般疑问句,变为间接引语时,用连词if或whether连接。
直接引语是特殊疑问句,变为间接引语时,仍用原来的疑问词作连词来引导。
解题步骤:1.陈述句
“I don’t like computers,” Sarah said to her friends.
第一步Sarah said to her friends that I don’t like computers.
( I—she 时态said 过去式 don’t ---- didn’t )
第二步Sarah said to her friends that she didn’t like computers.
2. 一般疑问句:
Is it easy to improve the condition of the soil? ( They asked him )
第一步It is easy to improve the condition of the soil.
第二步They asked him if it is easy to improve the condition of the soil.
第三步Asked过去式 is---- was
第四步They asked him if it was easy to improve the condition of the soil.
3.特殊疑问句:
When do you harvest the wheat ?( They asked him )
第一步you harvest the wheat
第二步They asked him When you harvest the wheat.
第三步(you--he)(harvest-- harvested)
第四步They asked him when he harvested the wheat
练习
1.He asked ____ for the violin.
A Did I pay how much B. I paid how much C. how much did I pay D. how much I paid
2. Someone is ringing the doorbell. Go and see _____.
A.who is he B. who he is C. who is it D. who it is
3. Can you tell me ____?
A.how good is his spoken English B. how well his spoken English is
C. how well he speaks English D. how good he can speak English
4. He said that he had bought the jacket____.
A .before three days B. three days before C. three days ago D. last week
5. Did you say_____?
A. that what he said was true B. that it was true that he said
C. what did he say was true D. what he said it was true
6. Please tell me ____ from.
A .where do you come B. where you come
C. where you will come D. there you come
7. Ask her ____ come with us.
A if she will B. if or not she will
C. that if she will D. whether will she
8. The driver said that he ____ pick ____ a passenger at west street.
A will, up B. would, up C. will, out D. would, out
9. He said he ___ in 1993.
A .has born B. had been born C. had born D. was born
10. John ___ me he was going to help me with my English.
A. explained B. spoke C. told D. said
答案:1.A; 2.B; 3.C; 4.B ; 5.A; 6.B; 7.A; 8.B ;9..D; 10.C
单元小测
1.课文单词填空
At the end of the 16th century, English was only spoken by people from England. They were native speakers. Today, the largest number of people 1 (speak) English may be in China. A lot of Chinese people speak English 2 their foreign language.
3 English language has changed quite a lot over the last four centuries. Old English sound more 4 less like German for it was 5 on German, but modern English sounds more like French than German 6 England was once ruled by the French.
Two people had great effects on the English changes. One was Shakespeare, who 7 (large) the English 8 (词汇) ; the other was Noah Webster, 9 wrote a dictionary 10 gave American English its own identity.
2..单词拼写
1.A lot of students p_______________ at the meeting took part in the discussion.
2.The tall tree was struck by l___________ and broke.
3.The robber was caught when he was filling his car with p__________ at the filling station.
4.Go up in an e_______________ to the fifth floor.
5.He looked calm, but a__________ he was very nervous
6.In the word “happy” the _________(重音) is on the first syllable.
7.He has a poor _________________(词汇), so he can't express himself correctly.
8.The gentlemen disclosed their own __________(身份).
9.Anyone who wants to learn English well must remember the ___________(惯用法) of English.
10.Though he is not a ___________(本国的) English speaker, he can speak English very fluently.
3. .单项选择
1.(2009·安徽卷)-Do you think it’s a good idea to make friends with your students?
-______, I do. I think it’s a great idea.
A.Really B.Obviously C.Actually D.Generally
2.His uncle made a film ______ his story in his childhood.
A.based on B.was based on C.basing on D.to base on
3.(2010·山东潍坊质量监测)It could be judged from her eyes ______ she was very satisfied with her performance.
A.what B.which C.that D.where
4.The money collected should be made good use ______ the people in Sichuan Province who suffered a lot in the earthquake.
A.of helping B.to help C.to helping D.of to help
5.During the flight to the Moon, Chang’e I Satellite ______ adjusts her direction so that she can go into her programmed orbit and then circle around it at the most appropriate angle(角度).
A.eventually B.gradually C.constantly D.continuously
6.I’m Chinese and I do feel ______ Chinese language is ______ most beautiful language. What’s your opinion?
A.the; a B./; the C.the; / D./; a
7.______ as a serious problem at present, it has drawn a lot of people’s attention.
A.Recognize B.Recognized C.Being recognized D.Having recognized
8.The army received a command that they ______ to the front immediately.
A.would march B.must march C.should march D.were marching
9.The newly-founded chess club formally ______ us to attend the opening ceremony.
A.requested B.required C.demanded D.commanded
10.(2009·江西一模)Films, ______ the one you told me about yesterday or the one that will be on, ______ not worth seeing.
A.including; is B.as well as; are C.besides; is D.such as; are
11.The part that China ______in the international affairs ______ in the international society.
A.plays; is widely praised B.plays; is wide praised
C.takes; widely praised D.takes; wide praised
12.______, a sleepy driver killed twenty-two students and teachers in a traffic accident in Shanxi Province.
A.What's more B.After all C.Believe it or not D.More or less
13.Many students make great progress in listening ______ the large amount of time devoted to it.
A.because of B.instead of C.in case of D.in spite of
14.—Oh, it's you! I ______ you.
—I've just had my hair cut, and I'm wearing new glasses.
A.didn't recognize B.didn't know C.haven't recognized D.haven't known
15.He won't change his mind ______ you go and try to persuade him yourself.
A.since B.until C.as if D.even if
1.答案:1.speaking 2. as 3. The 4. or 5. based 6. because
7.enlarge 8.vocabulary 9.Samuel Johnson
答案1.present;2. lightning;3. Petrol;4. Elevator;5. actually
6. accent;7.vocabulary 8. Identities 9. Usage 10. native#p#副标题#e#
1.答案:C 解析:考查副词。really真正地;obviously明显地;actually实际上; generally大体上。actually在句中起加强语气的作用,相当于sure,certainly, of course。
2. 答案:A 解析:based on为过去分词短语,在句中做后置定语修饰a film。
3. 答案:C解析:考查名词性从句。语意为:她对她的表现很满意,这可以从她的眼睛里判断出来。It是形式主语,that引导的从句是真正的主句。
4.答案:D 解析:make (good) use of“(好好)利用”,变为被动时态即be made use of;句中to help the people...为不定式做目的状语。
5. 答案:B解析:考查副词词义辨析。句意为:在飞往月球的途中,嫦娥一号卫星逐渐调整她的方向以便能进入预定的轨道并以合适的角度绕其运行。A.最终;B.逐渐地;C.不断地;D.继续地。
6. 答案:A 解析:第一空需填the,指“汉语”;第二空填a, a most beautiful language是泛指,其中most相当于very。
7. 答案:B 解析:be recognized as“被认为是……”;句中recognized为过去分词做状语。
8.答案:C 解析:command“命令”,其 that从句中用“(should)+动词原形”。
9. 答案:A 解析:表示正式委婉的请求用 request。
10. 答案:D 解析:such as 用于列举事物。又因为主语为复数,第二空格用 are,故选D。本句译为:像你昨天告诉我的电影,以及即将上映的,都不值得看
11. 答案:A 解析:第一空考查短语 play a part in; 第二空考查被动语态
12. 答案:C 解析:考查固定短语。
13. 答案:A 解析:考查介词短语。because of“因为”
14.答案:A 解析:句中表示“刚刚没有认出某人”用 didn't recognize
15.答案:D解析:考查 even if引导让步状语从句。
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高中化学理论的学习,对学生科学素养的培养和提高有着至关重要的意义。为了能够方便同学们更好地记忆历史重要知识点,以下读文网小编整理了人教版必修1的知识点,欢迎阅读!
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作为高中生掌握好每一个英语短语,有利于我们提高英语水平。下面就让读文网小编给大家分享一些高一英语必修一重点短语吧,希望能对你有帮助!
spend one’s time in many different ways;
enjoy doing things by oneself; go swimming;
go for an outing; have an outing at (the seashore);
see the sights of Beijing; play the piano (violin);
play chess (basketball); have a swim;
have dances on weekends; have a picnic over the weekend;
go to the cinema; have a party; hold a sports meeting;
do some reading; help sb do sth; enjoy a family trip;
get everything ready for;
ride one’s bike with sb.to(the park);
There are a lot of activities at (the beach).
We enjoy a change from our busy life in the city.
She would like to bring sth. to the picnic.
It was a very relaxing Sunday.
There are good programmes on TV on weekends.
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地理的复习需要同学们的专心,因为它大多内容都是零散且广泛的。下面是读文网小编为您整理的高一地理必修二知识重点,希望对各位有所帮助。
1、(1)下列各种工业根据主导因素不同将序号填入相应的导向型工业:
A.家具制造业 B.啤酒厂 C.制糖业 D.罐头加工厂 E.有色冶金业
F.电子装配厂 G飞机制造业 H集成电路工业 I普通服装工业
原料导向型市场导向型、动力导向型、 廉价劳动力导向型技术导向型。
(2)鞍钢区位选择考虑的主导因素交通便利。
钢铁工业区位选择的三次变化:煤炭—铁矿—沿海。
(3)污染严重工业的区位选择。
污染大气的工业:布局在常年盛行风的下风向,避开冬夏季风对吹的方向。 污染水源工业:布局在河流下游,污水排放口远离水源地及河流上游。
固体废弃物污染工业:远离农田和居民区。
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学好地理目的是掌握地理环境要素的形成、发展及其变化规律,对人类活动和社会发展产生的影响。下面是读文网小编为您整理的高一地理必修一知识重点归纳,希望对各位有所帮助。
1、主要的气象灾害:是指因暴雨洪涝、乾旱、台风、寒潮、大风沙尘、大(浓)雾、高温低温等因素直接造成的灾害。
台风 旱涝灾害 寒潮
发生的时间 夏秋季节 春夏秋 秋末、冬季、初春
发源地 热带洋面或副热带洋面 蒙古、西伯利亚
影响地区 我国东部沿海地区 除西部一些沙漠地区外的全国范围 除青藏、云贵、海南外的广大地区
天气变化 强风、特大暴雨、风暴潮 暴雨、大暴雨或特大暴雨 大风、雨雪、冻雨
2、主要的大气环境问题:全球变暖(温室效应CO2)、臭氧层破坏(氟氯烃消耗O3)、酸雨(SO2、NO2)
3、温室效应
①大量燃烧矿物燃料--大气中CO2增加--大气逆辐射增强
②滥砍滥伐森林--光合作用减弱--CO2相对增多--大气逆辐射增强
③大气逆辐射增强--温室效应--气温升高--全球热量带分布发生变化--经济结构发生调整(农业经济结构调整,中纬受损,高纬受益,使适宜种植业生产地域缩小,粮食减产。)
④极地冰山融化,沿海地区海海平面上升,沿海地区地下水水质变坏。
30、绿化的环境效益:
①通过光合作用保持大气中O2和CO2的平衡,净化空气;
②绿化植物和防护林可以调节气候、涵养水源、保持水土、防风固沙
③城市绿地的作用是吸烟除尘、过滤空气、减轻污染、降低噪音、美化环境
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几乎所有的地理问题都跟人类的生产、生活有着密切的关系。下面是读文网小编为大家整理的高一必修二地理重点知识点复习,希望对大家有所帮助。
我国人口迁移的主要方向及原因分析:
(1)改革开放前:人口迁移方式主要是有组织的从东部城市和人口稠密区调往农村和边
疆人口稀疏区。
特点:规模小
原因:①计划经济;②严格的户籍管理制度;③政策限制农民进城
(2)改革开放后:人口自发迁移为主(民工流):
①由农村迁往城市;
②由内地迁往沿海城市和工矿区。
原因:主要是经济因素。
沿海、城市地区,收入高、就业机会多,生活条件好。
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自然地理部分主要与数学、物理、生物学科联系较多。下面是读文网小编为大家整理的高一地理必修一知识重点,希望对大家有所帮助。
1.热力环流的性质特点
由于地面冷热不均而形成的空气环流,成为热力环流。它是大气运动最简单的形式。
(1)水平方向相邻地面热的地方--垂直气流上升――低气压(气旋)--阴雨
(2)水平方向相邻地面冷的地方--垂直气流下沉――高气压(反气旋)--晴朗
(3)垂直方向的气温气压分布:随海拔升高,虽然气温降低,但是空气变稀,气压降低。
(4)来自低纬的气流--暖湿
(5)来自高纬的气流--冷干
(6)来自海洋的气流--湿
(7)来自大陆的气流(离岸风)--干
(8)两种性质不同的气流相遇--锋面--阴雨、风
2.气温年较差:①影响因素:海陆热力性质;地表植被水分状况;云雨多少。
②变化规律:内陆﹥沿海,大陆性气候﹥海洋性,裸地﹥草地﹥林地﹥湖泊,晴天﹥阴天。
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高中地理的学习要求“温故而知新”,复习是必不可少的。下面是读文网小编为大家整理的高一地理必修一第三章知识点,希望对大家有所帮助。
1、影响海水温度因素--太阳辐射(收入)、蒸发(支出)、洋流
2.洋流的形成:定向风(地球上的风带)是形成洋流最基本的动力,风海流是最基本的洋流类型。
7.洋流的分布(画一画右面洋流分布模式图):
①中低纬度洋流圈北半球呈顺时针方向、南半球呈反时针方向。
②北半球中高纬逆时针方向洋流圈
③南半球40-60度海区形成西风漂流
④北印度洋形成季风洋流,冬季逆时针,夏季顺时针。
4.洋流对地理环境的影响:
①影响气候(暖流-增温增湿,寒流-减温减湿)
②影响海洋生物--渔场 ③影响航海 ④影响海洋污染
5.世界主要渔场:北海道、北海、纽芬兰渔场---寒暖流交汇;秘鲁渔场――上升流
6.海洋渔业集中在大陆架的原因:
①这裏阳光集中,生物光合作用强;
②入海河流带来丰富的营养盐类,浮游生物繁盛,鱼饵丰富。
7.海洋灾害是指源于海洋的自然灾害: 海啸和风暴潮。
8.海洋环境问题指源於人类活动的海洋生态破坏:海洋污染、海平面上升、赤潮
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高中地理的知识内容更加多了,基础一定要掌握好,尤其是高一必修一的地理复习重点。下面是读文网小编为大家整理的高一地理必修一第五章知识重点,希望对大家有所帮助。
影响农业区位的因素
1.气候:热量、光照、降水影响极大;气候条件分布有明显的地域性
2.地形:平原——耕作业;山地——林业、畜牧业;山地农作物的垂直分布;
3.土壤:作物生长的物质基础;酸性红壤——种茶树
4.市场:市场的需求量最终决定了农业生产的类型和规模
5.交通运输:园艺业、乳畜业——必须有方便快捷的交通运输条件;接近城市分布
6.政策:如商品性农业生产基地建立
农业发展与区位的关系
自然因素的利用和改造
自然因素对农业区位的影响并非都是决定性的。
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英语是一门实用性极强的课程。下面是读文网小编收集整理的高一英语必修1知识点以供大家学习。
1. Only then did we decide to answer violence with violence.
2. I felt bad the first time I talked to the group. the first time相当于连词,用来引导从句
3. He taught us during the lunch breaks and the evenings when we should have been asleep. should have done 本应做而未做
needn’t have done 本不应做而做了 can’t have done 过去不可能做过
4. The time when I first met Nelson Mandela was a very difficult period of my life
5. Mandela was the black lawyer to whom I went for advice.
6. He was generous with his time, for which I was grateful.
7. The school where I studied for only two years was three kilometers away.
8. The day when Nelson Mandela helped me was one of my happiest.
9. However, this was a time when one had to have……
10. The parts of town in which they had to live were the poorest parts of South Africa.
11. …. We had reached a stage where we have almost no rights at all.
12. They could not get the jobs they wanted.
13. we were put into a position in which we had either to accept we were less important or fight the government.
14. I was worried about whether I would become out of work.
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在高一的学习阶段,我们要打好每一个课程的基础。下面是读文网小编收集整理的高一英语必修3知识点以供大家学习。
19. make a bet 打赌
20. go ahead 前进;往下说
21. by accident 偶然;不小心
22. account for 说明;导致;做出解释
23. to be honest 说实话
24. shoulder to shoulder 肩并肩
25. in rags 衣衫褴褛
26. even if 即使;尽管
27. permit/allow sb. to do sth. 允许某人做某事
28. care about 关心;在乎
29. get into trouble 陷入困境
30. as a matter of face 事实上
31. as for…… 关于;就……而言
32. give attention to 注意……
33. honor sb. for sth. 因……而表彰某人
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在地球表面形成过程中,大陆与海洋的面积和位置几经变迁,产生了巨大变化。下面是读文网小编为您整理的高一必修2地理知识重点,希望对各位有所帮助。
1、城市化的一个很重要的标志就是农村人口迁移到城市转变为城市人口的过程,从人口迁移来看,推动城市化发展的动力不外乎推力和拉力。推力是指那些使得人群离开乡村的因素,拉力是指那些吸引人群来到城市的因素。
2、由于生产力发展不平衡,在不同地区和同一地区的不同时期,推力和拉力的具体内容可能很不相同,其相互作用的结果也不一样。
3、主要的推力来自农村,如农村人口增长快,对土地压力大、农村收入低,社会服务短缺、农村受自然灾害影响大等。主要的拉力因素来自城市,如城市就业机会多、城市社会福利保障程度高、文化设施齐全、城市交通便捷等。 但是也要看到对农村人口迁移到城市来说,农村也有拉力,如人们的乡情、故土难离等,城市也有推力,如陌生的城市环境、生活方式、住房、教育、政策等也会阻碍农村人口迁移到城市。
4、城市化的动力
(1)社会经济的发展是促进城市化的主要动力,主要表现在三大产业的发展对城市化
(2)历史上三次技术革命促进工业的发展,也促进了城市化进程
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掌握好每一个知识点是学好英语的重要方法。下面是读文网小编收集整理的高一英语必修2知识点总结以供大家学习。
高一英语必修2知识点总结
以上就是读文网小编收集的高一英语必修2知识点总结全部内容,希望对你有帮助。
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英语是高中时期比较重要的一门课程,高一时期打好英语基础尤为重要。下面就让读文网小编给大家分享一些高一英语必修一知识点归纳吧,希望能对你有帮助!
1.prefer
Prefer doing…to doing…
Prefer to do rather than do
2.advantages/disadvantages优势/劣势
2.Ever since middle school,my sister Wang Wei and I have dreamed about taking a great bike trip.从高中起,我姐姐王维和我就一直梦想做一次伟大的自行车旅行。
连词since引导的时间状语从句用一般过去时,介词since与时间点连用
It is/has been+一段时间+since+一般过去时自从……至今已经多久了。
3.persuade sb to do sth=persuade sb into doing sth说服某人做某事
4.强调句型It is/was+被强调部分+that/who
强调句型可以强调除谓语动词以外的任何句子成份。一般来说,如果被强调部分是人时,用连词that或who;如果被强调部分是物,只能用连词that。
not…until的强调句
5.be fond of喜欢,喜爱
6.Although尽管,虽然,引导让步状语从句
① although 从句多在句首,though 从句可在主句前、中、后任何位置,而且though 可以作副词用于句末,作“但是,不过”讲,而although 无此用法。
② as though(仿佛,好像),even though(即使,尽管)中不能用although。
③ though 引导的让步状语从句可以倒装(将表语、状语、情态动词后的动词原形前置到句首,此用法同as),而 although 不可以。
7.insist on doing sth/sth.一定要、坚持主张
She insists on getting up early and playing her radio loudly.
她老是一大早起来把收音机音量开大
11.care about关心 在乎
care for喜欢,照料,照顾
12.change one’s mind改变主意
13.experience经历/经验
14.Once可作为从属连词,作“一(旦)……就……”解,连接一个表示时间的状语从句。从句中常用一般现在时现在完成时表将来。
Once you have begun you must continue.
15.give in让步 give up 放弃
16.instead of代替,而不是
17.make up one’s mind to do下定决心做某事
18.a large parcel of一大包
19.as usual像往常一样
20.put up our tent搭帐篷
21.stay awake睡不着,醒着stay up熬夜
22.for company做伴
23.lie beneath the stars躺在星空下
24.can hardly wait to do=can’t wait to do迫不及待做某事
25.go in the right direction走正确的方向
26.at a very slow pace.以很慢的速度
27.be similar to类似于
28.afford to do sth付得起,能承担
29.be tired from因……而疲劳be tired of对……厌倦
30.be in high spirits喜气洋洋,兴高采烈
31.come true实现,成真
32.give sb some advice on doing...
33.a guide to………的指南
34.on a tour在游览中,在巡演中
35.in detail详细地
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高中数学知识比较多,高一数学必修二需要记忆的知识点原理也很多,所以要加强对数学的学习。下面就让读文网小编给大家分享一些高一数学必修2重点知识归纳吧,希望能对你有帮助!
(1)两个平面互相平行的定义:空间两平面没有公共点
(2)两个平面的位置关系:
两个平面平行-----没有公共点;两个平面相交-----有一条公共直线。
a、平行
两个平面平行的判定定理:如果一个平面内有两条相交直线都平行于另一个平面,那么这两个平面平行。
两个平面平行的性质定理:如果两个平行平面同时和第三个平面相交,那么交线平行。b、相交
二面角
(1)半平面:平面内的一条直线把这个平面分成两个部分,其中每一个部分叫做半平面。
(2)二面角:从一条直线出发的两个半平面所组成的图形叫做二面角。二面角的取值范围为[0°,180°]
(3)二面角的棱:这一条直线叫做二面角的棱。
(4)二面角的面:这两个半平面叫做二面角的面。
(5)二面角的平面角:以二面角的棱上任意一点为端点,在两个面内分别作垂直于棱的两条射线,这两条射线所成的角叫做二面角的平面角。
(6)直二面角:平面角是直角的二面角叫做直二面角。
高一数学必修二知识点总结:两平面垂直
两平面垂直的定义:两平面相交,如果所成的角是直二面角,就说这两个平面互相垂直。记为⊥
两平面垂直的判定定理:如果一个平面经过另一个平面的一条垂线,那么这两个平面互相垂直
两个平面垂直的性质定理:如果两个平面互相垂直,那么在一个平
二面角求法:直接法(作出平面角)、三垂线定理及逆定理、面积射影定理、空间向量之法向量法(注意求出的角与所需要求的角之间的等补关系)
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理科知识重在理解,先熟记再梳理很重要。下面是由读文网小编为您带来的高一化学必修2重点知识总结,希望对大家有所帮助。
一、元素周期表
★熟记等式:原子序数=核电荷数=质子数=核外电子数
1、元素周期表的编排原则:
①按照原子序数递增的顺序从左到右排列;
②将电子层数相同的元素排成一个横行——周期;
③把最外层电子数相同的元素按电子层数递增的顺序从上到下排成纵行——族
2、如何精确表示元素在周期表中的位置:
周期序数=电子层数;主族序数=最外层电子数
口诀:三短三长一不全;七主七副零八族
熟记:三个短周期,第一和第七主族和零族的元素符号和名称
3、元素金属性和非金属性判断依据:
①元素金属性强弱的判断依据:
单质跟水或酸起反应置换出氢的难易;
元素最高价氧化物的水化物——氢氧化物的碱性强弱; 置换反应。
②元素非金属性强弱的判断依据:
单质与氢气生成气态氢化物的难易及气态氢化物的稳定性;
最高价氧化物对应的水化物的酸性强弱; 置换反应。
4、核素:具有一定数目的质子和一定数目的中子的一种原子。
①质量数==质子数+中子数:A == Z + N
②同位素:质子数相同而中子数不同的同一元素的不同原子,互称同位素。(同一元素的各种同位素物理性质不同,化学性质相同)
二、 元素周期律
1、影响原子半径大小的因素:①电子层数:电子层数越多,原子半径越大(最主要因素)
②核电荷数:核电荷数增多,吸引力增大,使原子半径有减小的趋向(次要因素)
③核外电子数:电子数增多,增加了相互排斥,使原子半径有增大的倾向
2、元素的化合价与最外层电子数的关系:最高正价等于最外层电子数(氟氧元素无正价)
负化合价数 = 8—最外层电子数(金属元素无负化合价)
3、同主族、同周期元素的结构、性质递变规律:
同主族:从上到下,随电子层数的递增,原子半径增大,核对外层电子吸引能力减弱,失电子能力增强,还原性(金属性)逐渐增强,其离子的氧化性减弱。
同周期:左→右,核电荷数——→逐渐增多,最外层电子数——→逐渐增多
原子半径——→逐渐减小,得电子能力——→逐渐增强,失电子能力——→逐渐减弱
氧化性——→逐渐增强,还原性——→逐渐减弱,气态氢化物稳定性——→逐渐增强
最高价氧化物对应水化物酸性——→逐渐增强,碱性 ——→ 逐渐减弱
三、 化学键
含有离子键的化合物就是离子化合物;只含有共价键的化合物才是共价化合物。
用电子式表示出下列物质:
CO2、N2、H2S、CH4、Ca(OH)2、Na2O2 、H2O2等 如: NaOH中含极性共价键与离子键,NH4Cl中含极性共价键与离子键,Na2O2中含非极性共价键与离子键,H2O2中含极性和非极性共价键
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