主語從句

主語從句是在復合句中充當主語的從句，通常放在主句謂語動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引導強調句的比較。

It 作形式主語代替主語從句，主要是為了平衡句子結構，主語從句的連接詞沒有變化。而it引導的強調句則是對句子某一部分進行強調，無論強調的是什么成分，都可用連詞that。被強調部分指人是也可用who/whom。

例如：

It is a pity that you didn’t go to see the film.

It doesn’t interest me whether you succeed or not.

It is in the morning that the murder took place.

It is John that broke the window.

2. 用it 作形式主語的結構。

(1) It is +名詞+從句

It is a fact that … 事實是…

It is an honor that …非常榮幸

It is common knowledge that …是常識

(2) it is +形容詞+從句

It is natural that… 很自然…

It is strange that… 奇怪的是…

(3) it is +不及物動詞+從句

It seems that… 似乎…

It happened that… 碰巧…

(4) it +過去分詞+從句

It is reported that… 據報道…

It has been proved that… 已證實…

3. 主語從句不可位于句首的五種情況。

(1) if 引導的主語從句不可居于復合句句首。

(2) It is said ， (reported) …結構中的主語從句不可提前。

例如：

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

That President Jiang will visit our school next week is said. (wrong)

(3) It happens…， It occurs… 結構中的主語從句不可提前。

例如：

It occurred to him that he failed in the examination. (right)

That he failed in the examination occurred to him. (wrong)

(4) It doesn’t matter how/whether …結構中的主語從句不可提前。

例如：

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

Whether he is wrong or not doesn’t matter. (wrong)

(5) 含主語從句的復合句是疑問句時，主語從句不可提前。

例如：

Is it likely that it will rain in the evening? (right)

Is that will rain in the evening likely? (wrong)

4. What 與that 在引導主語從句時的區別。

What 引導主語從句時在句時在從句中充當句子成分，如主語.賓語.表語，而that 則不然。

例如：

1) What you said yesterday is right.

2) That she is still alive is a consolation.

高考英語語法知識點梳理

表強調：

still，indeed，ofcourse，afterall，aboveall，surely，certainly，undoubtedly，inanycase，anyway，infact，especially，obviously，clearly

表比較

like，unlike，similarly，inthesameway，equally，similarto

表對比

bycontrast，onthecontrary，while.，whereas，ontheotherhand，unlike，instead，but，differentfrom，however，otherwise，yet，theformer…thelatter，once…now，some…other，yearsago…today

表列舉

foronething…andforanother，like

表舉例

Forexample，forinstance，suchas，take…forexample，except[for]

表時間

Later，next，then，finally，atlast，eventually，meanwhile，fromnowon，fromthenon，atthesametime，forthetimebeing，intheend，immediately，inthemeantime，inthemeanwhile，recently，soon，nowandthen，during，nowadays，since，lately，afterwards，temporarily，earlier，now，afterawhile，when，while，before，after，until，assoonas，then，suddenly，inafewdays，inrecentyears，earlythismorning/year/century，allofsudden，themoment

表順序

First，second，third，firstly，secondly，thirdly，tobeginwith，firstofall，inthefirstplace，last，finally，eventually，intheend，atlast，next，aboveall，firstandmostimportant，meanwhile

表解釋

Inotherwords，infact，asamatteroffact，thatis，thatistosay，namely，

表遞進

Whatismore，inaddition，and，alsobesides，too，moreover，furthermore，aswellas，aswell，again，additionally，whatisworse?

表讓步

Although，though，eventhough，afterall，inspiteof，evenif，

表轉折

However，ratherthen，insteadof，but，yet，ontheotherhand，unfortunately，despite

表原因

Forthisreason，for，nowthat，thanksto，assince，owingto，because，becauseof，dueto，

表結果

So，so/such…that，therefore，thus，asaresult，accordingly

表總結

Onthewhole，inconclusion，inaword，tosumup，inbrief，insummary，toconclude，tosummarize，inshort，ingeneral，generallyspeaking，aboveall，afterall

其他

Mostly，occasionally，naturally，mainly，exactly，commonly，forthispurpose，formostofus，inmanycases，inthiscase.

英語高考知識點提綱

詞組句型用法例析

1. accuse … of… 控告某人犯某罪

I accused Donny of stealing money. 我控告Donny偷盜。

2. so as to (do sth.) 為了……

We got up early so as to catch the first train. 我們早起以便坐上第一班車。

辨析：so as to…不能位于句首，此時可用in order to…

In order not to be late for school, we must get up early. 為了上學不遲到，我們須早起。

3. defend…against… 防衛……免受……

Our duty is to defend our country against the enemies. 我們的職責是保衛我們的國家免受敵人的侵襲。

4. have a nose for sth. 有探查或發現某事物的能力新課標第一網

That reporter has a nose for news. 那位記者對新聞特別敏感。

5. the same…as…./such…as…

He is such a kind man as all like. 他是個人人喜歡的善良的人。(as作like的賓語)

注：在定語從句中，先行詞中包含有the same, such, so等時，要用as來引導;關系代詞as在定語從句中作主語或賓語等。

比較：He is such a kind man that all like him. (that不作任何句子成分)

英語高考知識點4

倒裝結構

學生容易混淆的是全部倒裝與部分倒裝.如何區分之,編個順口溜：副(adv.)介(prep.)提前全倒裝,其它句式部分倒;否定提前倒助動,讓步狀語倒表語;復合句式倒主句,不

倒裝的屬特殊.下面舉例說明：

A、Here comes the bus.(副詞提前,全倒裝)

B、Here he comes.(代詞作主語,不倒裝)

C、In front of the house lies a garden.(介詞短語提前,全倒裝)

D、Never shall I do this again.(否定詞提前,部分倒裝)

E、Young as he is ,he knows a lot.(讓步狀語從句,表語倒裝)

F、Only when he told me did I realize what trouble he was in.(only 修飾狀語,主句倒裝)

G、Only he can save the patient.(only修飾主語.不倒裝)

H、Not only will help be given to people,but also medical treatment will be provided.(否定詞提前,部分倒裝)

I、Not only he but also we like sports.(連接兩個主語,不倒裝)

虛擬語氣

虛擬語氣也是一個難點.所謂虛擬語氣是表示說話人的愿望、假設、猜測或建議,而不表示客觀存在的事實.它通過句子的謂語動詞的特殊形式來表示.現歸納如下：純假設,用虛擬,動詞時態退一級：條件句,分主從,主句謂語前加would (should,could,might);表愿望,用虛擬,wish后面接賓語(從句)：現在過去與將來,動詞時態退一級：提建議,用虛擬,賓語(從句)動詞用(should)do：倆建議,三要求,再加堅持與命令(suggest,advise,demand,require,request,insist,order)：It is time和eoukd rather,后接叢句用虛擬：部分主語從句中, 謂語用虛擬結構 (It is necessry /important/natural/natural/strange/strange that……should do). 下面舉例說明：

A、If you came tomorrow,we would have the metting. (條件句虛擬)

B、Without air,there would be no living things.(同上)

C、We wish we had arrived there two hours earlier.(表示愿望虛擬)

D、He demanded that we (should)start right away.(表示建議虛擬)

E、It is(high)time that we left (should leave)now.(特殊從句虛擬)

F、I would rather you gave me the book.(同上)

G、It is necessary that we should clean the room everyday,(主語從句虛擬)

H、He speaks English so fluently as if he were English. (特殊從句虛擬)