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7. The thief ran ____ he was out of sight in a short while.

A. so fast that　　 　　 B. too fast that　　 　　　 C. fast enough that 　　　 D. such fast that

6. Roses need special care _____ they can live through winter.

A. because　　 　　　　 B. so that 　　　　　 C. even if　　 　　　　　　 D. as

5. Mike acted ___ nothing had happened.

A. as　　　 　　　　　　 B. as though　　 　 C. as although　　　 　　 D. just like

4. I will let you drive ___ you have a driving licence.

A. unless　　 　　　　　 B. except　　 　　　 C. on condition that　 　 D. so that

3. ___ I admit that the problems are difficult, I don’t agree that they cannot be solved.

A. Since　　 　　　　　 B. As　　　 　　　　　 C. Even though　　 　　　 D. Because

2. Practise as ___ as you can.

A. much　　 　　　　　 B. many　　 　　　　 C. more　　 　 　　　　　　 D. hardly

例1、Generally speaking, _________ according to directions, the drug has no sid-effect.

A. when taking　　　 B. when taken　　　　 C. when to take　　　 D. when to be taken

答案為B。

[解析]　 這是一個(gè)由when引導(dǎo)的時(shí)間狀語(yǔ)從句，原句應(yīng)為“Generally speaking ,when it is taken according…”。由于take用被動(dòng)時(shí)，主從句主語(yǔ)一致，因此從句中的it was可以被省略，簡(jiǎn)化為when taken…分詞短語(yǔ)作狀語(yǔ)，而選A、C時(shí)則缺乏主語(yǔ)。譯文：通常地說(shuō)，當(dāng)這藥按照指導(dǎo)說(shuō)明被服用的話是沒(méi)有副作用的。

例2、-Dad, I've finished my assignment.

-Good ,and _________ you play or watch TV ,you mustn't disturb me.　

A. whenever　　　 B. whether　　　　 C. whatever　　　 D. no matter

答案為B。

[解析]　 no matter不能直接引導(dǎo)讓步狀語(yǔ)從句，應(yīng)用no matter + wh族疑問(wèn)詞方可，故排除D；盡管A、C都有“無(wú)論”的意思，但只有B項(xiàng)whether可與or連用，表示選擇，即“無(wú)論你玩還是看電視，不許打擾我”�！�

例3、The famous scientist grew up _______ he was born and in 1930 he came to Shanghai.

A. when　　　 B. whenever　　　 C. where　　 　D. wherever

答案為C。

[解析]　 where引導(dǎo)的是地點(diǎn)狀語(yǔ)從句。譯文：這位著名的科學(xué)家在他的出生地長(zhǎng)大，1930年他來(lái)到上海。因?yàn)樵趶木渲杏斜硎緯r(shí)間的介詞短語(yǔ)in 1930,所以可以排除when和whenever; wherever引導(dǎo)讓步狀語(yǔ)，意思是“無(wú)論在哪里”，與句意不符。

例4、________, I have never seen anyone who's as capable as John.

A. As long as I have traveled　　　 B. Now that I have traveled so much

C. Much as I have traveled　　　　 D. As I have traveled so much

答案為C。

[解析]　 這是一個(gè)讓步狀語(yǔ)從句。as在引導(dǎo)讓步狀語(yǔ)從句時(shí)，要把形容詞或副詞放在它的前面。如果是名詞，一般不加冠詞。如：Child as he is, he has learned two thousand new words .As long

　as“只要……”引導(dǎo)條件狀語(yǔ)從句；Now that“既然”引導(dǎo)原因狀語(yǔ)從句；As“因?yàn)椤币龑?dǎo)原因狀語(yǔ)從句。譯文：雖然我走過(guò)了那么多地方，我從來(lái)沒(méi)有見(jiàn)過(guò)像約翰這樣有能力的人�！�

例5、In such dry weather, the flowers will have to be watered if they________.

A. have survived　 　B. are to survive　　 　C. would survive　　 D. will survive

答案為B。

[解析]　 這是一個(gè)條件狀語(yǔ)從句，主句用了一般將來(lái)時(shí)態(tài)。在條件狀語(yǔ)從句中，一般不能使用將來(lái)時(shí)，但能和be to do的形式連用，所以應(yīng)填are to survive。譯文：在如此干旱的天氣里，如果你想要花成活，就得給它們澆水。

例6、The WTO cannot live up to its name _____ it does not include a country that is home to one fifth of mankind.

A．a(chǎn)s long as　　　　 B．while　　　　 C．if　　　　 D．even though

答案選C。

[解析]　 從句子意思可知，是一個(gè)條件狀語(yǔ)從句。as long as“只要……”引導(dǎo)條件狀語(yǔ)從句經(jīng)常用肯定句，所以要填if。譯文：如果WTO不包括一個(gè)占人類五分之一的國(guó)家，它就名不符實(shí)了。

例7、She found her calculator　 ________ she lost it.

A. where　　　　　 B. when　　　　 C. in which　　　　 D. that

答案為A。

[解析]　 這是一個(gè)地點(diǎn)狀語(yǔ)從句，意思是“東西是在丟的地方找到的�！眎n which用于定語(yǔ)從句中，其前必須有先行詞。這個(gè)句子中沒(méi)有先行詞，所以不能填in which�！�

例8、-I'm going to the post office.

- ________you're there, can you get me some stamps?

A. As　　 B. While　　 C. Because　　 D. If

答案為B。

[解析]　 while引導(dǎo)時(shí)間狀語(yǔ)從句，意思是“當(dāng)……時(shí)”。這句話的意思是“當(dāng)你在那兒的時(shí)候，是否能給我買一些郵票？”as雖然也可以引導(dǎo)時(shí)間狀語(yǔ)從句，但其意思是“一邊……一邊……”；because引導(dǎo)的是原因狀語(yǔ)從句；if引導(dǎo)的是條件狀語(yǔ)從句，對(duì)方已經(jīng)說(shuō)明要到郵局去，不能再作假設(shè)。

　例9、You should make it a rule to leave things ________you can find them again.

A. when　　　　 B. where　　　　 C. then　　　　 D. there

答案為B。

[解析]　 where引導(dǎo)地點(diǎn)狀語(yǔ)從句。這句話的意思是“你應(yīng)該作出一個(gè)規(guī)矩，把東西放在你能再找到它們的地方。”　

例10、We'll have to finish the job, ________.

A. long it takes however　　　　　　　 B. it takes however long

C. long however it takes　　　　　　　 D. however long it takes

答案選D。

[解析]　 however引導(dǎo)讓步狀語(yǔ)從句。要用陳述句的語(yǔ)序。

第三節(jié) 鞏固練習(xí)

Direction: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the best answer that completes the sentence.

1. It is ___ he has behaved so badly that he must be punished.

A. as　　　 　　　　　　　 B. since　　 　　　　 C. because　　 　　　　　 D. that

5、as, though 引導(dǎo)的倒裝句

as / though引導(dǎo)的讓步從句必須把表語(yǔ)或狀語(yǔ)提前(形容詞、副詞、分詞、實(shí)義動(dòng)詞提前)。句首名詞不能帶任何冠詞。

如句首是實(shí)義動(dòng)詞，助動(dòng)詞放在主語(yǔ)后。如果實(shí)義動(dòng)詞有賓語(yǔ)和狀語(yǔ)，隨實(shí)義動(dòng)詞一起放在主語(yǔ)之前。

例如：Child as /though he was, he knew what was the right thing to do.

= Though he was a small child, he knew what was the right thing to do.

Try hard as he will, he never seems able to do the work satisfactorily.

= Though he tries hard, he never seems…

雖然他盡了努力，但他的工作總做的不盡人意。

4、如從句表示"隨時(shí)間推移"，連詞能用as，不用when 或while。

例如：As the day went on, the weather got worse.　

日子一天天過(guò)去，天氣越變?cè)綁摹?/p>

3、當(dāng)從句的動(dòng)作發(fā)生于主句動(dòng)作之前，只能用when 引導(dǎo)這個(gè)從句，不可用as 或 while。

例如：When you have finished your work, you may have a rest.