高三英語(yǔ)必背知識(shí)點(diǎn)歸納
英語(yǔ)是高考的重點(diǎn)科目之一，也是同學(xué)們?nèi)蘸蠊ぷ骱蜕钪斜仨氄莆盏囊婚T(mén)語(yǔ)言，下面小編為大家?guī)?lái)高三英語(yǔ)必背知識(shí)點(diǎn)歸納，歡迎大家參考閱讀，希望能夠幫助到大家!
高三英語(yǔ)動(dòng)詞必背知識(shí)點(diǎn)
1、can能，可以，表說(shuō)話人同意，許可還可表客觀條件許可，如:You can go now.
提建議或請(qǐng)求時(shí)可用can I, can you表客氣，如Can I buy you a drink?
can和be able to表能力時(shí)的區(qū)別。
can表一般具有的能力，be able to表在特定條件下的能力，如:Although the driver was badly hurt,he wasable to explain what had happened.
2、may
(1)可以，表說(shuō)話人同意，許可或請(qǐng)求對(duì)方許可。You may go.
(2)(現(xiàn)在和將來(lái))可能，也許，只用于肯定句和否定句中，如He may not be right.
3、must,have to
must表主觀上的必須，have to表客觀上的必須，如:It's getting late. I have to go. -Must I go now.-Yes,you must.(No, you needn't./ No, you don't have to.)
4、need,dare這二詞有實(shí)意動(dòng)詞和情態(tài)動(dòng)詞兩種詞性，如用作實(shí)意動(dòng)詞后接動(dòng)詞不定式to do，如用作情態(tài)動(dòng)詞后接動(dòng)詞原形。Need I go now? --Yes, you must./No, you needn't.)
5、shall用于第一人稱疑問(wèn)句中表說(shuō)話人征求對(duì)方的意見(jiàn)或向?qū)Ψ秸?qǐng)求，如，Shall we begin our lesson?用于二、三人稱陳述句，表說(shuō)話人命令、警告、允諾、威脅等口吻，如: You shall fail if you don't workharder.
6、should表應(yīng)該，意為有責(zé)任，有義務(wù)。如:We should try our best to make our country more beautiful.
7、will表有做某事的意志、意愿、安心、打算，如"Will you lend me your book?" "Yes, I will."
8、should have done表應(yīng)該做而未做
must have done表對(duì)過(guò)去事實(shí)的肯定推測(cè)
could have done表本可以做某事
9、判斷句：肯定句用must, 否定句用can't,不太肯定用may,might
He must be in the office now.
He must have gone to bed, for the light is out.
He can't be in the office. He is at home.
He couldn't have cleaned the classroom, because he didn't come here today.
He might be in the office, I am not sure.
He might have cleaned the room, I suppose.
高三英語(yǔ)從句知識(shí)點(diǎn)總結(jié)
1、though,although,as的區(qū)別
A、Though,although的主句中可以用yet, still, nevertheless,但不可使用but。
B、though引導(dǎo)的從句可以倒裝，也可以不倒裝;as引導(dǎo)的從句必須倒裝;although引導(dǎo)的從句不能倒裝。其結(jié)構(gòu)為：形容詞/分詞/副詞/動(dòng)詞原形/名詞(無(wú)冠詞)+as/though+主語(yǔ)+謂語(yǔ)……
2、though可用作副詞，放在句末，意為“不過(guò)，但是”。Although無(wú)此用法。
3、某些短語(yǔ)也引導(dǎo)讓步的從句或短語(yǔ)，意為“盡管”，如：in spite of the fact that, despite the fact that,regardless of(the fact that)
句子種類
1、陳述句的否定
(1)在含有賓語(yǔ)從句的主從復(fù)合句中，當(dāng)主句的謂語(yǔ)動(dòng)詞是think, expect, believe, suppose, guess, fancy,imagine等，且主句主語(yǔ)是第一人稱時(shí)，賓語(yǔ)從句謂語(yǔ)的否定習(xí)慣上要移到主句謂語(yǔ)上，如: I don't think he is right.
(2)含有否定意義的副詞never, seldom, hardly, scarcely, rarely, barely的句子應(yīng)視為否定句，如: I have never been there before.
2、反意疑問(wèn)句
(1)need和dare 既可作情態(tài)動(dòng)詞，又可作實(shí)意動(dòng)詞，在反問(wèn)部分須加以區(qū)別，如We needn't leave, need we? We don't need to leave, do we?
(2)陳述部分出現(xiàn)否定意義的副詞或代詞如never, seldom, few, hardly, little等時(shí)，反問(wèn)部分須用肯定形式，如：He seldom comes, does he?
(3)陳述部分用不定代詞作主語(yǔ)時(shí)，反問(wèn)部分的主語(yǔ)用it ，如：Nothing can stop me, can it?
陳述部分用everybody, everyone, somebody, someone，等作主語(yǔ)時(shí)，反問(wèn)部分常用it，有時(shí)也用they，如:Everybody knows that, don't they?
(4)陳述部分包括used to 時(shí)，反問(wèn)部分可有兩種形式，如: You used to get up early, usedn't (didn't) you?
(5)陳述部分是"there + be"結(jié)構(gòu)時(shí)，反問(wèn)部分用there，如:There's something wrong with you, isn't there?
(6)陳述部分是含有賓語(yǔ)從句的主從復(fù)合句時(shí)，反問(wèn)部分的主語(yǔ)和謂語(yǔ)應(yīng)和主句保持一致，如: He never told others what he thought, did he?
但，如果是I think , I believe等+賓語(yǔ)從句時(shí)，反問(wèn)部分須和從句的動(dòng)詞保持一致，如，I don't think he is right, is he? I don't believe he does that, does he?
3、感嘆句
用what或how,
What a beautiful park it is.
How beautiful a park it is.
How beautiful the park is.
How we worked!
4、祈使句
Take care!
Don't stand there.
Please open the door for the old lady.
高三英語(yǔ)不定式知識(shí)點(diǎn)
1、不定式的一般式：不定式的一般式所表示的動(dòng)作通常與主要謂語(yǔ)的動(dòng)作同時(shí)或幾乎同時(shí)發(fā)生，或是在它之后發(fā)生。
如：They invited us to go there this summer.他們邀請(qǐng)我們今年夏天去那兒。He stood aside for me to pass.他站到一邊讓我通過(guò)。
2、不定式的完成式：不定式的完成式所表示的動(dòng)作在謂語(yǔ)所表示的動(dòng)作之后發(fā)生，它在句中可作表語(yǔ)、狀語(yǔ)、賓語(yǔ)，有時(shí)也可作主語(yǔ)、定語(yǔ)等。
如：She seemed to have heard about this matter.她似乎已聽(tīng)說(shuō)過(guò)這件事。
I am sorry to have kept you waiting so long.我很抱歉讓你等了這么久。
I meant to have told you about it,but I happened to have an important thing to do.我本來(lái)想告訴你這件事的，但我碰巧有一件重要的事要做。
It has been an honor for me to have traveled so much in your country.對(duì)我來(lái)說(shuō)，在你們國(guó)家旅行這么多地方是一件很榮幸的事情。
3、不定式的進(jìn)行式：不定式的進(jìn)行式表示正在進(jìn)行的與謂語(yǔ)動(dòng)詞同時(shí)發(fā)生的動(dòng)作。它在句中可以用作除謂語(yǔ)以外的所有成分。
如：It’s nice of you to be helping us these days.你真好，這些天一直幫我們。
He pretended to be listening to the teacher carefully.他假裝在認(rèn)真地聽(tīng)老師講課。We didn’t expect you to be waiting for us here.我們沒(méi)料到你一直在這兒等我們。
4、不定式的完成進(jìn)行式：如果不定式表示的動(dòng)作是謂語(yǔ)所表示
5、動(dòng)詞不定式的否定形式是由not或never加不定式構(gòu)成。如：Try not to be late again next time.盡量下次不要再遲到。He wished us never to meet her again.他希望我們永遠(yuǎn)不要再見(jiàn)到她。
6、疑問(wèn)詞+動(dòng)詞不定式：不定式和疑問(wèn)詞whether,what,which,whom,where,when,how,why等連用可以在句中起名詞的作用，通常跟在tell,know,show,decide,learn,wonder,explain,advise,teach,discuss,find out等動(dòng)詞后面作賓語(yǔ)，有時(shí)也可以充當(dāng)主語(yǔ)、表語(yǔ)等。
如：On hearing the news,he didn't know whether to laugh or to cry.聽(tīng)到這個(gè)消息，他不知道該哭還是該笑。
When to hold the meeting has not decided.什么時(shí)候開(kāi)會(huì)還沒(méi)有決定。
The most important problem is how to get so much money.最重要的事情是如何搞到這么多錢(qián)。
介詞后一般不直接接不定式，但可以接疑問(wèn)詞+不定式短語(yǔ)作賓語(yǔ)。
如：Mary gave some advice on how to learn English.瑪麗提了一些如何學(xué)習(xí)英語(yǔ)的建議。
I have no idea of how to do it.我不知道該怎么做。
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