時(shí)間、地點(diǎn)、讓步、原因狀語(yǔ)從句

1、時(shí)間狀語(yǔ)從句狀語(yǔ)從句指句子用作狀語(yǔ)時(shí)，起副詞作用的句子。它可以修飾謂語(yǔ)、非謂語(yǔ)動(dòng)詞、定語(yǔ)、 狀語(yǔ)或整個(gè)句子。根據(jù)其作用可分為時(shí)間、地點(diǎn)、原因、條件、目的、結(jié)果、讓步、方式和 比較等從句。狀語(yǔ)從句一般由連詞（從屬連詞）引導(dǎo)，也可以由詞組引起。從句位于句首或 句中時(shí)通常用逗號(hào)與主句隔開(kāi)，位于句尾時(shí)可以不用逗號(hào)隔開(kāi)。時(shí)間狀語(yǔ)從句考點(diǎn)聚焦（1）as、when、while 用法as表示 當(dāng)?shù)臅r(shí)候”往往和when/ while通用，但它著重強(qiáng)調(diào)主句與從句的動(dòng)作或事情同時(shí)或幾乎同時(shí)發(fā)生。She came up as I was cooking.（同時(shí)）The runners started as the g

2、un went off.（幾乎同時(shí)）when: （at or during the time that ）既可以表示在某一點(diǎn)的時(shí)候，又可表示在某一段時(shí)間 內(nèi)，主句與從句的動(dòng)作或事情可以同時(shí)發(fā)生也可以先后發(fā)生。It was raining whe n we arrived.（指時(shí)間點(diǎn)）When we were at school, we went to the library every day.（在一段時(shí)間內(nèi)）while意思是 當(dāng)?shù)臅r(shí)候”或 在某一段時(shí)間里 ”主句中的動(dòng)作或事情在從句中的動(dòng) 作或事情的進(jìn)展過(guò)程中發(fā)生，從句中的動(dòng)詞一般要用延續(xù)性動(dòng)詞。在when表示a period oftime時(shí)

3、，兩者可以互換。Please don ' t talk so loud while others are working.He fell asleep while/when reading. Strike while the iron is hot. （用 as或 when 不可，這里的 while意思是趁”）（2）引導(dǎo)時(shí)間狀語(yǔ)從句的連接詞除上述外還有： till, not un til,un til, before, sinceDon' t get off the bus un til it has stopped.He waited for his father until

4、 （till） it was twelve o ' clock.It will be five years before he retur ns from En gla nd. hardly / scarcely whe n, no soon erthan-,-as soon as once表示 一就As soon as I have finished it , I' ll give yu a call.Once you show any fear, he will attack you.We had hardly got / Hardly had we got into th

5、e country whe n itbega n to rain.No sooner had he arrived / He had no sooner arrived than she started complaining. directly, immediately, the mome nt, the minute that 一就He made for the door directly he heard the kno ck. each time, every time, by the timeEach time he came to my city, he would call on

6、 me.注意：表示未來(lái)情況，主句用將來(lái)時(shí)，從句用現(xiàn)在時(shí)。讓步狀語(yǔ)從句狀語(yǔ)從句指句子用作狀語(yǔ)時(shí)，起副詞作用的句子。它可以修飾謂語(yǔ)、非謂語(yǔ)動(dòng)詞、定語(yǔ)、 狀語(yǔ)或整個(gè)句子。根據(jù)其作用可分為時(shí)間、地點(diǎn)、原因、條件、目的、結(jié)果、讓步、方式和 比較等從句。狀語(yǔ)從句一般由連詞（從屬連詞）引導(dǎo)，也可以由詞組引起。從句位于句首或 句中時(shí)通常用逗號(hào)與主句隔開(kāi)，位于句尾時(shí)可以不用逗號(hào)隔開(kāi)。引導(dǎo)讓步狀語(yǔ)從句考點(diǎn)聚焦（1） although與though可以引導(dǎo)讓步狀語(yǔ)從句，不能與but連用，但可以與yet連用。Although they are poor, （ yet）they are warm-hearted.（2）

7、 even if或even though引導(dǎo)讓步狀語(yǔ)從句，表示即使”，縱然”，用來(lái)使人注意下 文所強(qiáng)調(diào)內(nèi)容的性質(zhì)。I ' II get there even（ though） I have to sell my house to get eno ugh money to go by air.（3）no matter后接上who、what、where、how等疑問(wèn)詞，也可以在這類疑問(wèn)詞后面加 上 ever 構(gòu)成 whoever、whatever、wherever、however 等。Don' tust him, no matter what / whatever he says.

8、Whoever breaks the law will be published.No matter how hard the work is, you' d better try to do it well.（4）as也可以引導(dǎo)讓步狀語(yǔ)從句。要用倒裝。Child as （ though）he is, he knows a lot. Much as I like it, I won' t buy.Try as he would, he couldn ' t lift the heavy box.原因狀語(yǔ)從句原因狀語(yǔ)從句考點(diǎn)聚焦because, for, as, sinc

9、e, now that（1）表示不知道的原因時(shí)用because即說(shuō)話人認(rèn)為聽(tīng)話人不知道，因此because從句是全句最重要的部分，通常它被置于主句之后。You want to know why I ' m leaving? I ' m leaving because I ' m full.for雖然表示不知道的原因，但其語(yǔ)氣較because要弱得多，是可說(shuō)可不說(shuō)的話，它只能置于主句之后，這時(shí)，for是并列連詞。如果不是因果關(guān)系，而是對(duì)前面主句的內(nèi)容加以解 釋或推斷時(shí)，只能用 for。如：It ' s morning now, for the birds are

10、singing.（很顯然，鳥(niǎo)叫不可 能是現(xiàn)在已是早上”的原因。）（20表示已經(jīng)知道的原因時(shí)用as或since,即某種原因在說(shuō)話人看來(lái)已經(jīng)很明顯，或已為聽(tīng)話人所熟悉，因此它是句中不很重要的部分。since要比as正式一些，它們通常被置于語(yǔ)句之前，但有時(shí)卻相反。Seeing all of the child ren already seated, he said,“ Since every one is here, let' s start.（3）下列情況下只能使用because: 在回答why的問(wèn)句時(shí)； 在用于強(qiáng)調(diào)句型時(shí)； 被not所否定時(shí)。地點(diǎn)狀語(yǔ)從句1、地點(diǎn)狀語(yǔ)從句考點(diǎn)聚焦where

11、, whereverMake a mark wherever you have any questi ons.We will go where the Party directs us.2、 目的狀語(yǔ)從句：that, so that, in order that注意：目的狀語(yǔ)從句的謂語(yǔ)動(dòng)詞常與情態(tài)動(dòng)詞連用，否則可能是結(jié)果狀語(yǔ)從句。不可置于句首。3、 結(jié)果狀語(yǔ)從句：that, so that, sothat, such that 注意：so +形容詞/副詞+ that從句;such + 名詞+ that從句。4、 方式狀語(yǔ)從句：as, as if (though)I ' II do as

12、 I am told to.It looks as if it is going to rain.5、 比較狀語(yǔ)從句：than, as6、 條件狀語(yǔ)從句： if, unless, so ( as) long as, in case, once, a far as, on condition that. 注意if與unl ess的區(qū)別：不能用 and連接兩個(gè)uni ess從句，即不能有 un less,anduni ess但if not and if卻不i受此限。You won ' t lose your weight unless you eat less and unless you exercismore. ( x)但可以說(shuō) unl ess you eat less and exercise more.7、注意狀語(yǔ)從句中從句的省略現(xiàn)象(1) 連接詞+過(guò)去分詞Don' t speak un til spoke n to.Pressur