高二全册的英语语法知识点(共20页).doc
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1、精选优质文档-倾情为你奉上高二全册的英语语法知识点重点语法构词法:在英语中,词的构成方法主要有三种,即合成、转化和派生。1.合成法把两个或两个以上独立的词合成一个新词的方法叫合成法,也叫合词法。(1)合成名词highway 公路(2)合成形容词hand-made 手工制作的 good-looking相貌好看的 dark-blue 深蓝(3)合成动词ill-treat 虐待 mass-produce 大规模生产 safe guard 保卫(4)合成副词however 然而 downstairs 在楼下(5)合成代词 anybody nobody something2.转化法转化是指词由一种词类转
2、化为另一种词类。(1)动词转化为名词常用give, take, have, make等动词与其搭配构成动词词组,表示一个动作。 eg:give a smile 微笑 give a tick 踢take a seat 就座take a bath 洗澡have a swim 游泳have a talk谈话make a wish 许愿(2)形容词转化为副词How long is the road?那条路有多条?(形容词)How long have you been working there?你在那里工作了多久?(副词)(3)形容词转化为动词 eg:The storm slowed down to
3、half its speed. 风暴速度减慢了一半。The girls gradually quieted down. 女孩子们慢慢安静了下来了。(4)名词转化为动词 eg:The hall can seat two thousand people.大厅能坐2000人。The passengers have booked their plane ticket.旅客们已经订了飞机票。(5)形容词转化为名词Something has gone wrong with the tool.工具出了点毛病。(形容词)Little children didnt know the difference bet
4、ween right and wrong.小孩子不能辨别是非。(名词)3.派生法派生是由词根加词缀(前缀、后缀)构成新词。除少数前缀外,前缀一般只改变词的意义,不改变词性;后缀一般只改变词性,不引起词义的变化。前 缀例 词a-构成形容词、副词Alive(活着的), abroad(在国外), alonedis-(否定)discourage, disagreeen-(使可能)enrich, enable(使成为可能),endangerin-(ill, im-, ir-)(不,非)invisible(看不见), illogical(不合逻辑的), impossible, irregular(不规则的
5、)inter-(相互,之间)international, interchangemis-(误)mislay, misunderstand(误会),mislead(误导)re-(重复,再)recycle(循环),remarry, rewritetele-(远程)telephone, telegraph, telecommunications(电信)un-(不),non-(不,非)unfair, unknown, noon-conductor(非导体)后 缀例 词名词-er者foreigner, traveler, speaker, reader-ese地方的人Chinese, Japanese,
6、 Vietnamese-ian 精通的人,地方的人musician, technician(技术员), African, Asian-ist 专业人员pianist, physicist, scientist, violiinist-ment性质,状态movement(运动), development, encouragement-ness性质,状态illness, shyness, sadness, business-or器具,者tractor, visitor, professor, actor名词-tion表示动作、过程、结果ageneration(世代),suggestion, inv
7、ention, action形容词practical(实用的),international, finalAmerican, Italian, Australiansouthern, northern, easternhelpful, useful, harmfulreasonable, capable, eatablefoolish, British, English selfishactive, native(本族的),expensive, adoptivewindy, sleepy, healthy, sunnycareless, selfless(无私心的),harmless, usel
8、ess动词-fy使化simplify(简化), terrify(恐吓), satisfy-ize使成为realize(实现), organize, stabilize, modernize副词-ly表示方式、程度badly, truly, angrily, suddenly-ward(s)表示方向toward(s), backward, outward(s)(向外)数词-teen十fourteen, eighteen, thirteen-ty整十位数forty, fifty, eighty, twenty-th序数词twelfth, twentieth, fourth情态动词情态动词表示说话人
9、对某一动作或状态的态度,如可能、义务、必要、猜测等。但本身词义不完全,不能单独做谓语动词,必须和动词原形连用。情态动词没有人称和数的变化。每一个情态动词都有自己的具体含义,都有自己的使用特点。1. can:能力、可以、会。表“许可”时可代替may,但may比较正式。 eg:Most young men can use computers. 大部分年轻人会用计算机。2. could: can的过去式,也可表示语气委婉。 eg:Could you wait for a while?请你等一会儿好吗?3. be able to:能力。比can有更多的形式,但表示过去成功地做了某事时只能用was/we
10、re able to,不能用could。 eg:He was able to reach Mount Qomolangma in 1982.他在1982年成功地登上珠穆朗玛峰。4. may:许可、可能 eg:You may borrow the back numbers. 你可以借过期期刊。may的否定形式:may not,但表示“不可以”或“禁止”时用must not eg:May I watch TV now?我现在能看电视吗?No, you mustnt. 不,你不可以看。may还可以表示推测。eg:There may be a few copies left in the bookst
11、ore.书店里可能还有几本。5. might: may的过去式。用于推测时语气更加不肯定。 eg:He might be at home today. 今天他可能在家。6. must:必须。表示说话人的主观意志。 have to表示客观需要;且比must有更多的时态形式。 eg:We must hand in our papers today.(主观看法)今天我们必须把卷子交上去。We have to get there before dark. (客观需要)天黑前我们必须到达那里。对must引导的问句作否定回答时常用neednt或dont have to。 eg:Must I leave n
12、ow?我现在必须走吗?No, you neednt. (You dont have to.)不,你不必。7. shall:在疑问句中用于第一、三人称,表示征求意见或请求指示。 eg:Shall I turn off the power?要不要我把电源切断?shall用于二、三人称表示命令、警告或允诺。 eg:You shall be punished.你会受到惩罚的。8. should:应该;ought to:义务、责任,语气稍重一些。 eg:You should keep your promise. 你应该遵守你的诺言。We ought to help them when they are
13、in trouble.当他们有麻烦时,我们有责任帮助他们。9. will:表示意愿 eg:I will stop smoking.我要戒烟。在疑问句中用于第二人称表示询问和请求。 eg:Will/Would you please do me a favor?请帮帮忙好吗?10. would: will的过去式,表示提出请求时语气较委婉。(1)在下面的句型中要用would,不用will。Would you mind if I smoke a cigarette?我能抽一支烟吗?Would you like to have a look at the house?你想看一看这房屋吗?(2)但在否定
14、句中用will,不用would。 eg:Wont you sit down?你不坐一会儿吗?(3)would可表示过去的习惯动作,可和used to互换,但used to表示现在不存在的习惯。 eg:When I was in Shanghai, she would tell me about the great changes there.当我在上海时她总是对我讲上海的巨大变化。He used to drink alcohol, but now he drinks beer.他过去喝白酒,但现在喝啤酒。11. need与dare: 既可作情态动词也可作实义动词。一般在肯定句中作实义动词,在否
15、定句和疑问句中作情态动词。 eg:Dare you go out alone at night?(dare是情态动词)晚上你一个人敢出去吗?The bike needs to be repaired.(need是实义动词)这辆自行车需要修理。12.情态动词+have done表示对过去发生事情的推测。(1)may/might have done表示“可能”might语气婉转。但主句中动词为过去时态,一定要用might。 eg:He said she might have missed the train. 他说她可能没赶上火车。(2)could have done表示“本来能够做某事”。 eg
16、:You could have succeeded. 你本能够成功。(事实是失败了。)(3)cant/couldnt have done表示“不可能发生某事”。 eg:He thought his son couldnt have taken all the tablets.他认为他儿子不可能把药全都吃了。(4)must have done表示“肯定发生了某事”。 eg:The windows look bright and clean today. Some must have cleaned them. 窗子这么干净明亮,一定有人擦过了。(5)should/ought to have do
17、ne表示“本应该做某事”。 eg:You should have kept the matches under lock and key.你应该把火柴保管好。(带有责任的意思)(6)neednt have done本没有必要做某事。 eg:There was plenty of time, so she neednt have hurried.时间很充裕,她本不用匆匆忙忙的。13.某些固定结构中情态动词用法。(1)had better+动词原形,否定形式为:had better not do eg:You had better go to school at once.你最好立刻去上学。(2)
18、would rather+动词原形,否定形式为:would rather not do eg:I would rather do it right away. 我宁可立即就做。被动语态(一)被动语态被动语态常用在没有必要或不可能说明动作的执行者的句子中。被动语态的构成是be+动词的过去分词,应该注意的是:语法变化要在be动词上体现,助动词放在be动词前。下面5个例句均选自近年来全国高考英语试卷。请同学们根据上下语境,认真体会各种时态中的被动语态的用法。1.一般现在时的被动语态 eg:I need one more stamp before my collection is completed.
19、2.现在完成时的被动语态 eg:Ive been told the sports meet must be put off.Yes, it all depends on the weather.3.现在进行时的被动语态 eg:Have you moved into the new house?Not yet, the rooms are being painted.4.一般过去时的被动语态 eg:I was given ten minutes to decide whether I should reject the offer.5.过去完成时的被动语态 eg:The police found
20、 that the house had been broken into and a lot of things stolen.有时在被动语态的句子后面加上by+动作的执行者,有时在被动语态的句子后面加上with+动作的手段、方法或工具。 eg:He was killed by a falling stone.他被一块掉下来的石头砸死了。He was killed with a knife.他被人用刀子杀死了。(二)习惯上不使用被动语态的几种情况1.不及物动词(词组)如:happen, remain, stay, appear, fall, rise, belong to, break out
21、, take place 等。2. draw, read, sell, wash, write, open, wear等作不及物动词用,常用主动表被动。 eg:The door wont open. 门打不开。3.不定式在easy, difficult, fit等形容词之后作状语时,常用主动形式而不用被动形式。 eg:His speech isnt easy to understand. 他的演讲不易理解。4.在need, want, require 等动词后,用动名词的主动形式表示被动意义(也可用不定式的被动式)。 eg:The matter wants looking into.(=The
22、 matter wants to be looked into.)这件事需要调查。The bike needs repairing.(=The bike needs to be repaired.)这辆自行车需要修理。5.在形容词worth后面用动名词的主动形式表被动,不可接不定式。但可用be worthy to be done或be worthy of being done. eg:The book is worth readingThe book is worthy to be readagain.这本书值得再次阅读。The book is worthy of being read6.不定
23、式作定语时,如果句子的主语或宾语是不定式的逻辑主语,不定式用主动形式表示被动意义。 eg:I have something important to do. 我有重要的事情要做。非谓语动词(一)不定式(1)时态的构成不定式常用的时态有;一般式、完成式和进行式。其构成为:一般式:to do完成式:to have done进行式:to be doing(2)时态的用法不定式所表示的动作与句子谓语动词表示的动作同时发生,不定式用to do形式;不定式表示的动作或状态发生在谓语动词所表示的动作或状态之后,也用一般式。 eg:Im glad to meet you. 见到你我很高兴。My uncle a
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