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高二英語Unit5語法知識(shí)解讀

2016-12-27 16:47:53 來源:精品學(xué)習(xí)網(wǎng)

   高二英語Unit5語法知識(shí)是主語從句,主語從句指在復(fù)合句中充當(dāng)主語成分的句子,在主句中不要求做何成分。

  一、引導(dǎo)主語從句的連詞主要有:

  從屬連詞:that whether

  連接代詞:who whoever whom whose what whatever which whichever

  連接副詞:when where how why

  二、用法

  主語從句是在復(fù)合句中充當(dāng)主語的從句,通常放在主句謂語動(dòng)詞之前或由形式主語it代替,而本身放在句子末尾。

  1. It 作形式主語和it引導(dǎo)強(qiáng)調(diào)句的比較

 、僦髡Z從句常用it作形式主語,一般常用句型為:It is+{名詞/形容詞/過去分詞}+主語從句例如:

  It is still a question whether she will come or not.

  It is strange that you should like him.

  It is still unknown which team will win the match.

  另外,還有一些比較多見的結(jié)構(gòu):

  It turned out that……;

  It has been proved that……;

  It happened/occurred that……;

  It is well-known that……等等

 、诙鴱(qiáng)調(diào)句則不同,它的結(jié)構(gòu)是:It+be+被強(qiáng)調(diào)部分+that+從句

  強(qiáng)調(diào)主語:It is the times that produce their heroes.時(shí)勢(shì)造英雄

  強(qiáng)調(diào)賓語:It is English that Prof.Lin teaches us.

  強(qiáng)調(diào)狀語:It was in shanghai that I saw the film.

  判斷是否是強(qiáng)調(diào)句有一個(gè)方法,就是將that以后的“句子的其余部分”拿出來單獨(dú)看,看有沒有缺成分,缺的是什么成分,再把謂語動(dòng)詞后面that前面的那部分,帶到你認(rèn)為缺成分的地方,如果放進(jìn)去是一句完整的句子了,那就說明是強(qiáng)調(diào)句。

  2. 用it 作形式主語的結(jié)構(gòu)

  (1) It is +名詞+that從句

  It is a fact that … 事實(shí)是……

  It is an honor that …非常榮幸

  It is common knowledge that …是常識(shí)

  (2) it is +形容詞+that從句

  It is natural that… 很自然……

  It is strange that… 奇怪的是……

  (3) it +不及物動(dòng)詞+that從句

  It seems that… 似乎……

  It happened that… 碰巧……

  (4) it is+過去分詞+that從句

  It is reported that… 據(jù)報(bào)道……

  It has been proved that… 已證實(shí)……

  3.主語從句不可位于句首的五種情況

  (1) if引導(dǎo)的主語從句不可居于復(fù)合句句首。

  (2) It is said , (reported) …結(jié)構(gòu)中的主語從句不可提前。例如:

  It is said that President Jingo will visit our school next week.

  (3) It happens…, It occurs… 結(jié)構(gòu)中的主語從句不可提前。例如:

  It occurred to him that he failed in the examination.

  (4) It doesn’t matter how/whether …結(jié)構(gòu)中的主語從句不可提前。例如:

  It doesn’t matter whether he is wrong or not..

  (5) 含主語從句的復(fù)合句是疑問句時(shí),主語從句不可提前。例如:

  Is it likely that it will rain in the evening?

  4. What 與that 在引導(dǎo)主語從句時(shí)的區(qū)別

  What 引導(dǎo)主語從句時(shí)在從句中充當(dāng)句子成分,如主語.賓語.表語,而that 則不然。例如:

  What you said yesterday is right.

  三、賓語從句用以區(qū)分主語從句的幾個(gè)特征(賓語從句語法請(qǐng)點(diǎn)擊>>>>>高中英語語法賓語從句定義及用法)

  1、引導(dǎo)詞:what\which\whose\when\whether\if\where

  2語序:賓語從句必須是用陳述語句。(名詞性從句都是陳述語序)

  如:I think that you must work harder.

  賓語從句的引導(dǎo)詞、連接詞的區(qū)別、否定轉(zhuǎn)移等現(xiàn)象。

  補(bǔ)充:從句的語序永遠(yuǎn)是陳述句。

  高二年級(jí)人教版英語Unit5重點(diǎn)句子的內(nèi)容就是這些,相信大家一定需要了解人教版高二英語Unit5重點(diǎn)詞匯講解和人教版高二英語Unit5重點(diǎn)詞匯講解,希望對(duì)大家掌握基礎(chǔ)有幫助。

  (責(zé)任編輯:陳海巖)

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