狀語從句一、時(shí)間狀語從句的連接詞1.when,while,as

三者均可表示“當(dāng)……的時(shí)候”，如果主句中的謂語動(dòng)詞表示的是短暫的動(dòng)作，而從句表示的動(dòng)作正在進(jìn)行，三者可通用。但是（1）when和as都可與終止性動(dòng)詞連用，而while只能與延續(xù)性動(dòng)詞連用。（2）as強(qiáng)調(diào)主句與從句中的謂語動(dòng)詞動(dòng)作同時(shí)發(fā)生，也可表示一個(gè)人的兩個(gè)動(dòng)作交替或同時(shí)進(jìn)行，意為“一邊……，一邊……”。例題：Lindawasjustgoingoutshopping_______thetelephonerang.A.while

B.when

C.after

D.because

2.after,before,assoonasafter表示主句的動(dòng)作發(fā)生在從句動(dòng)作之后；before表示主句的動(dòng)作發(fā)生在從句動(dòng)作之前；assoonas表示主句的動(dòng)作是緊接在從句動(dòng)作之后發(fā)生的，表示“一……就……”。例題：Youshouldmakeagoodplan_______youdoanythingimportant.A.before

B.after

C.though

D.until3.until(till)until(till)在肯定句中，只與延續(xù)性動(dòng)詞連用，意為“到……為止”；在否定句中，可與短暫性動(dòng)詞連用，意為“直到……才”，這時(shí)till和until可以用before替換。例題：Iwon’tbelievethatlittleBobcanrun100metresin15seconds_______Iseeitwithmyowneyes.

A.until

B.after

C.when

D.if二、條件狀語從句的連接詞引導(dǎo)條件狀語從句的連詞有if（如果）；unless(除非)，它相當(dāng)于“if...not”；as(so)longas(只要)等。例題：We’llgotovisitTian’anmenSquare_______itdoesn’traintomorrow.A.if

B.assoonas

C.when

D.since主從句的時(shí)態(tài)呼應(yīng)1．

當(dāng)狀語從句表示將來時(shí)，在when,after,before,until,assoonas等引導(dǎo)的時(shí)間狀語從句和if引導(dǎo)的條件狀語從句中，從句通常不用一般將來時(shí)，而用一般現(xiàn)在時(shí)。例題：Don’tleaveuntilhe_______back.

A.havecome

B.comesC.willcome

D.came2.在由since引導(dǎo)的時(shí)間狀語從句中，主句用現(xiàn)在完成時(shí)，從句用一般過去時(shí)。也可用“Itis+一段時(shí)間+since+時(shí)態(tài)為一般過去時(shí)的從句”句型。例題：—DoyouknowBettyverywell?—Yes,sheandI_______friendssincewemetinGuangzhoulastsummer.A.havemade

B.havebecomeC.havebeen

D.haveturnedKey:BAAABC三、結(jié)果狀語從句的連接詞引導(dǎo)結(jié)果狀語從句的連詞有so/such...that（如此……以至于）,sothat（以致，結(jié)果）等。1.so...that常用于“so+adj./adv.+that”，“so+adj.+a/an+n.+that”或“somany/much/few/little(+adj.)+n+that”結(jié)構(gòu)；such...that常用于“such+(a/an)+adj.+n.+that”結(jié)構(gòu)。如：a.HespokesofastthatIcouldn’tfollowhim.b.Heissuchacarelessmanthathemakesmistakesattimes.2.so...that在某種情況下可以和too...to或enoughto結(jié)構(gòu)相互轉(zhuǎn)換。如：句a可以轉(zhuǎn)換成：Hespoketoofastformetofollow.句b可以轉(zhuǎn)換成：Heiscarelessenoughtomakemistakesattimes.3.sothat還可以引導(dǎo)目的狀語從句，意為“以便；為的是”，此時(shí)可用to或inorderto替換。試比較：a.Theymissedthebussothattheywerelateforclass.(結(jié)果狀語從句)b.Theygotupearlysothattheycouldcatchthe

firstbus.(目的狀語從句)→Theygotupearlyto(inorderto)catchthe

firstbus.例題：1.Sheis_______gooddoctorthateveryonewantstoseeher.A.sucha

B.asuch

C.avery

D.so2.WhenIgotthenewsthattheshipwouldsink,Iwas_______frightened_______mylegscouldn’tmoveforward.A.so,that

B.very,that

C.too,that

D.too,to3.他們都買了往返機(jī)票，為的是能節(jié)省點(diǎn)兒錢。Theyallbought_____airtickets,__________theycould____somemoney.四、原因狀語從句引導(dǎo)原因狀語從句的連詞有：because,since(既然),as(由于)等。在表示原因的這三個(gè)詞中,because語氣最強(qiáng)，用來說明人所不知的原因，常用來回答由why提出的問題;as或since用來說明不重要或已為人們所知的原因，since比較正式。另外，并列連詞for也可以連接一個(gè)分句，對(duì)并列句的前一個(gè)分句所敘述的事件原因加以追述，兩個(gè)分句之間用逗號(hào)隔開。如：a.Ididn’tgo,becauseIwasafraid.b.As(Since)youarenotfeelingwell,you’dbetter

stayathome.例題：4.Iwaslateforclassyesterday_______therewasSomethingwrongwithmybike.A.when

B.that

C.until

D.because5.Wemustgetupearly,_______wehavealongwaytogo.A.so

B.for

C.but

D.or五、讓步狀語從句引導(dǎo)讓步狀語從句的連詞有：though,although,evenif,eventhough,however/nomatterhow,whatever/nomatterwhat,whoever/nomatterwho等。1.使用though,although時(shí)，務(wù)必避免與but連用，但可與yet連用；2.注意“nomatter+疑問詞”和“疑問詞+后綴ever”的換用。如：a.Althoughit’sraining,theyarestillworkingin

thefield.b.Nomatterwhat(whatever)happened,hewouldn’tmind.例題：6.Nomatter_______theweatherislike,youcanalwaysfindsurfersout_______thewavesinHonolulu.A.what,riding

B.how,riding

C.what,toride

D.how,toride7.