Ｕｎｉｔｓ１１－１２重點句型解析

一、重點句型解析

1. what引導的主語從句

【課文原句】 What we hear on the radio or see on TV is only a small part of all the wonderful music that is waiting for us.

【經典考例】________ is known to us all is that the 2008 Olympic Games will take place in Beijing.(2008福建卷)

A. ItB. What C. AsD. Which

【考點解析】答案為B。句意“我們都知道的事情是2008奧運會將在北京舉行。”what在引導名詞從句時既起連結作用，又要在從句中作主語或賓語，在任何情況下它都不能省略，它有具體意義，表示“……的內容”，具體可以譯為：“……的東西”、“……的時間”、“……的地點”、“……的事情”等。相當于the thing（s） which，the place which，the time which等。

2. 現在完成進行時

【課文原句】 People have been playing the blues for many years.

【經典考例】

— I’m sure Andrew will win the first prize in the final.

— I think so. He ________for it for months. （2008江蘇）

A. is preparing

B. was preparing

C. had been preparingD. has been preparing

【考點解析】答案為D。現在完成進行時have / has been doing常用來表示某一動作開始于過去某一時間，延續或重復地出現至今，或將繼續延續至將來。與現在完成時相比，現在完成進行時更強調在從過去到現在的時間里，動作或狀態一直持續或一直反復出現。

3. the next time引導時間狀語從句

【課文原句】 So the next time you look for a tape or a CD， don’t just look for Chinese or American music.

【經典考例】

1. By the time Jane gets home， her aunt ________ for London to attend a meeting.（2005天津）

A. will leave B. leavesC. will have leftD. left

2. By the time he realizes he ________ into a trap， it’ll be too late for him to do anything about it.（2008山東）

A. walksB. walked

C. has walked D. had walked

【考點解析】答案均為C。含time的短語如the next time， every time， each time，the last time， by the time， the first time等可引導時間狀語從句。例1句意“等簡到家時，她的姑姑已經動身去倫敦參加會議了。”by后接將來時間，故主句用將來完成時；例2句意“到他意識到他進入了陷阱，對他來說再采取行動已經太遲了。”本句by the time 引導的是表示將來的時間狀語從句，所以用realizes 代替will realize， 用 has walked 代替 will have walked。

4. as if引導方式狀語從句和表語從句

【課文原句】 It was almost as if the creature was watching them.

【經典考例】1. Eliza remembers everything exactly as if it ________ yesterday.（2006 全國）

A. was happeningB. happensC. has happenedD. happened

2. When a pencil is partly in a glass of water， it looks as if it ________ . （NMET 1995）

A. breaksB. has brokenC. were brokenD. had been broken

【考點解析】例1答案為D，as if后的謂語動詞應采用一般過去時的形式與狀語yesterday搭配， 表示對現在真實情況的虛擬。例2答案為C，句意“當一支鉛筆部分放在一杯水里，它看上去就像是斷了一樣。”表示所敘述的情況與事實相反。as if意為“似乎，好像”，相當于as though，引出的狀語從句謂語多用虛擬語氣，表示與事實相反，有時也用陳述語氣，表示所說情況是事實或實現的可能性較大。例如：He looks as if (as though) he had been hit by lighting.他那樣子就像被雷擊了似的。（與事實相反，謂語用虛擬語氣。）

It looks as if the weather may pick up very soon.看來天氣很快就會好起來。（實現的可能性較大，謂語用陳述語氣。）

5. if only用法

【課文原句】If only they could find a way to get to the room， or whatever it was， behind the wall.

【經典考例】

— Any information about your son?

— No， if only I ________ those tough words to him.

A. didn’t say

B. hadn’t said

C. shouldn’t have said

D. couldn’t have said

【考點解析】答案為B。句意“‘有你兒子的消息嗎？’‘沒有，要是我沒有對他說那些不好聽的話就好了。’”if only有兩種用法，一種是用以表示對現在或未來的愿望，可譯為“但愿，要是”；另一種用法是表示與事實相反的愿望，可譯為“要是……該多好”，表示與過去事實相反的愿望，句子謂語動詞常用過去完成時；表示與現在事實相反的愿望，句子謂語動詞常用過去時，be動詞用were。例如：

If only he would listen to her.（= We hope he will be willing to listen to her.）但愿他愿意聽她的話。

If only you hadn’t said， “Liar”! （= We wish you hadn’t said， “Liar”!）要是你沒說“你撒謊”就好了。

6. be about to do … when結構

【課文原句】 He was about to say something when Peter turned around.

【經典考例】He was about halfway through his meal ________ a familiar voice came to his ears.（2006 遼寧）

A. whyB. where C. when D. while

【考點解析】答案為C。考查結構be about to do… when。be about to do…when為固定句式，意思是“正要做……，這時……”，when為并列連詞，相當于and at that time。當并列連詞when用于“就在這時，正在這時”的用法時，常用于以下結構：1）was / were doing +when；2）be+表示狀態的介詞短語+when；3）be on the point of doing +when。例如：

I was walking in the street when someone called me from behind.我正在街上走，就在這時有人從后面叫我。

Li Ping was on his way home when two boys stopped him.李平正往家走，突然兩個男孩攔住了他。

I was on the point of telephoning you when you came back. 我正要給你打電話，你就回來了。