高中英語語法專題復(fù)習(xí) 專題十三 狀語從句教案

1、高中英語語法專題復(fù)習(xí)教案專題十三狀語從句一、考點(diǎn)聚焦 1、時(shí)間狀語從句 （1）as、when、while用法一覽表。類別作 用例 句asas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 gun 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

2、when 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))whilewhile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 of time時(shí)，兩者可以互換。Please dont talk so loud while others are working.He fell asleep while/when reading. Strike while the iron

3、is hot. (用as或when不可，這里的while意思是“趁”)（2）引導(dǎo)時(shí)間狀語從句的連接詞除上述外還有：till, not until , until, before, sinceDont get off the bus until it has stopped.He waited for his father until(till)it was twelve oclock.It will be five years before he returns from England.hardly / scarcely when, no sooner than, as soon as on

4、ce表示“一就”As soon as I have finished it , Ill give yu a call.Once you show any fear, he will attack you.We had hardly got / Hardly had we got into the country when itbegan to rain.No sooner had he arrived / He had no sooner arrived than she started complaining.directly, immediately, the moment, the mi

5、nute that 一就He made for the door directly he heard the knock.each time, every time, by the timeEach time he came to my city, he would call on me.注意：表示未來情況，主句用將來時(shí)，從句用現(xiàn)在時(shí)。2、讓步狀語從句（1）although與though可以引導(dǎo)讓步狀語從句，不能與but連用，但可以與yet連用。Although they are poor,(yet)they are warm-hearted.（2）even if或even though引導(dǎo)讓

6、步狀語從句，表示“即使”，“縱然”，用來使人注意下文所強(qiáng)調(diào)內(nèi)容的性質(zhì)。Ill get there even if(though)I have to sell my house to get enough money to go by air.（3）no matter后接上who、what、where、how等疑問詞，也可以在這類疑問詞后面加上ever構(gòu)成whoever、whatever、wherever、however等。Dont trust him, no matter what / whatever he says.Whoever breaks the law will be publis

7、hed.No matter how hard the work is, youd better try to do it well.（4）as也可以引導(dǎo)讓步狀語從句。要用倒裝。Child as(though)he is, he knows a lot.Much as I like it, I wont buy.Try as he would, he couldnt lift the heavy box.3、原因狀語從句：because, for, as, since, now that（1）表示不知道的原因時(shí)用because,即說話人認(rèn)為聽話人不知道，因此because從句是全句最重要的部分，

8、通常它被置于主句之后。You want to know why Im leaving? Im leaving because Im full.for雖然表示不知道的原因，但其語氣較because要弱得多，是可說可不說的話，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：Its morning now, for the birds are singing.（很顯然，鳥叫不可能是“現(xiàn)在已是早上”的原因。）（2）表示已經(jīng)知道的原因時(shí)用as或since,即某種原因在說話人看來已經(jīng)很明顯，或已為聽話人所熟悉，因此它是句中不很重要的部分

9、。since要比as正式一些，它們通常被置于語句之前，但有時(shí)卻相反。Seeing all of the children already seated, he said,“Since everyone is here, lets start.”(3)下列情況下只能使用because:在回答why的問句時(shí)；在用于強(qiáng)調(diào)句型時(shí)；被not所否定時(shí)。4、地點(diǎn)狀語從句：where, whereverMake a mark wherever you have any questions.We will go where the Party directs us.5、目的狀語從句：that, so that,

10、 in order that注意：目的狀語從句的謂語動(dòng)詞常與情態(tài)動(dòng)詞連用，否則可能是結(jié)果狀語從句。不可置于句首。6、結(jié)果狀語從句：that, so that, so that, such that 注意：so + 形容詞/副詞 + that從句；such +名詞 + that從句。7、方式狀語從句：as, as if(though)Ill do as I am told to.It looks as if it is going to rain.8、比較狀語從句：than, as9、條件狀語從句：if, unless, so (as) long as, in case, once, a far

11、 as, on condition that.注意if與unless的區(qū)別：不能用and連接兩個(gè)unless從句，即不能有 unless ,and unless 。但if not and if not卻不受此限。You wont lose your weight unless you eat less and unless you exercise more. (×)但可以說 unless you eat less and exercise more.10、注意狀語從句中從句的省略現(xiàn)象（1）連接詞 + 過去分詞Dont speak until spoken to.Pressure c

12、an be incrased when needed.Unless repaired, the washing machine is no use.（2）連詞 +現(xiàn)在分詞Look out while crossing the street.（3）連詞 + 形容詞/其他常見的有it necessary、if possible、when necessary、if any等。二、精典名題導(dǎo)解選擇填空1. I dont think Ill need any money but Ill bring some _.(NMET 2000)A. as last B. in case C. once again

13、 D. in time解析：答案為B。句意為“帶些錢以防萬一”，只能選擇in case。引導(dǎo)的條件狀語從句，后面省略了I should need it。2. The WTO cant live up to its name _ it doesnt include a country that is home to one fifth of mankind.（NMET 2000）A. as long as B. while C. if D. even though解析：答案為C。本題考查狀語從句的用法。句意為“假如世貿(mào)組織不包括占世界人口五分之一的中國的話，那它就名不副實(shí)”。as long as

14、語氣過于強(qiáng)烈，while和even though不符合句意。3、Someone called me up in the middle of the night, but they hung up_I could answer the phone.(NMET 2000)A. as B. since C. before D. until解析：答案為C。題意為：半夜里有人打來電話，我沒來得及就掛了。but暗示在接話前就掛了。4. You should try to get a good nights sleep much work you have to do.A. however B. no matter C. although D. whatever解析：答案為A。此題考查連詞用法，依據(jù)結(jié)構(gòu)However +形/副+主語+謂語。故選A。5.