條件狀語從句課件

AdverbialclauseofconditionAdverbialclauseofcondition

引導條件狀語從句最常用的連詞if,由if引導的條件狀語從句表示在某種條件下某事很可能發(fā)生。如:如果你請他幫忙,他會幫你的。Ifyouaskhim,hewillhelpyou.引導條件狀語從句最常用的連詞if,由if引導的條件狀語從句1.if條件狀語從句中，主句用一般將來時，從句用一般現(xiàn)在時，主將從現(xiàn)原則2.if條件狀語從句中，如果主句有

must，can，may

等情態(tài)動詞，從句用一般現(xiàn)在時。3.if條件狀語從句中，主句是祈使句，從句用一般現(xiàn)在時表示將來。

主祈從現(xiàn)原則。1.if條件狀語從句中，主句用一般將來例如：1.Wewillgototheparkifit_____________(rain)tomorrow.2.Youmuststopifthetrafficlight____(be)red.3.Don’twaitformeifI_____(be)late例如：1.WewillgototheparkifIfyoufailintheexam,youwilllethimdown.如果你考試不及格,你會讓他失望的。另外,if從句還表示不可實現(xiàn)的條件或根本不可能存在的條件,也就是一種虛擬的條件或假設,從句多用一般過去時（現(xiàn)在）或過去完成時(過去）。與將來事實相反Would/might/could+v原如:Ifyoufailintheexam,youwIfIwereyou,Iwouldinvitehimtotheparty.如果我是你,我會邀請他參加聚會。IwouldhavearrivedmuchearlierifIhadnotbeencaughtinthetraffic.如果沒有堵車,我會到的早一點兒。IfIwereyou,Iwouldinvite其他的連詞:unless

conj.除非,若不,除非在……的時候Youwillfailtoarrivethereintimeunlessyoustartearlier.

如果你不早點動身,你就不能及時趕到那兒。

Unlessitrains,thegamewillbeplayed.

除非下雨,比賽將照常進行。其他的連詞:unlessconj.除非,若不,除非在另外還有incase,as/solongasIncaseitrains,donotexpectme.如若下雨,就不要等我了。Aslongasyoupromisetocome,I’llwaitforyouuntilyoucome.只要你答應,我就等你來。另外還有incase,as/solongasbutfor

若非,要不是Butfortherain,weshouldhaveapleasantjourney.要不是下雨,我們的旅行肯定會很愉快。Butforyourhelp,weshouldnothavefinishedintime.要不是你幫忙,我們肯定不能及時完成任務。butfor若非,要不是Butfortherai1.

Ifyou____acake,yourhost______verypleased.(take,be)2.

Unlesstheweather____better,I_______athome.(get,stay)3.

He_______homeearlyifhe__________well.(go,notfeel)takewillbegetswillstaywillgodoesn’tfeelIfIseeherI’llinvitehertotheparty.(see,invite)Exercises1.

Ifyou____acake,yourho4.

What____I__ifthey____aboutpolitics?(do,talk)5.

Ifyou_____yourhand,thetaxi_________.(raise,stop)6.I__________anythingunlesshe____me.(notsay,ask)raisewillstopwillnotsayasksshalldotalk4.

What____I__ifthey____7.Thevolleyballmatchwillbeputoffifit________.

A.willrain

B.rains

C.rained

D.israiningB7.Thevolleyballmatchwillb8.—ShallBrowncomeandplaycomputergames?

—No,________hehasfinishedhishomework.

A.when

B.if

C.unless

D.once9.____youtry,youwillneversucceed.

A.If

B.Until

C.Since

D.UnlessCD8.—ShallBrowncomeandplay10.—Theairisfullofsmokeandpeoplearecoughing.

—Itwillgetworse________thegovernmentdoessomethingaboutthepollution.

A.but

B.unlessC.except

D.if11.IwonderifI______time.IfI____time,I’llgowithyou.

A.have;have

B.willhave;willhaveC.have;willhave

D.willhave;haveBD10.—TheairisfullofsmokeThankyou!Thankyou!AdverbialclauseofconditionAdverbialclauseofcondition

引導條件狀語從句最常用的連詞if,由if引導的條件狀語從句表示在某種條件下某事很可能發(fā)生。如:如果你請他幫忙,他會幫你的。Ifyouaskhim,hewillhelpyou.引導條件狀語從句最常用的連詞if,由if引導的條件狀語從句1.if條件狀語從句中，主句用一般將來時，從句用一般現(xiàn)在時，主將從現(xiàn)原則2.if條件狀語從句中，如果主句有

must，can，may

等情態(tài)動詞，從句用一般現(xiàn)在時。3.if條件狀語從句中，主句是祈使句，從句用一般現(xiàn)在時表示將來。

主祈從現(xiàn)原則。1.if條件狀語從句中，主句用一般將來例如：1.Wewillgototheparkifit_____________(rain)tomorrow.2.Youmuststopifthetrafficlight____(be)red.3.Don’twaitformeifI_____(be)late例如：1.WewillgototheparkifIfyoufailintheexam,youwilllethimdown.如果你考試不及格,你會讓他失望的。另外,if從句還表示不可實現(xiàn)的條件或根本不可能存在的條件,也就是一種虛擬的條件或假設,從句多用一般過去時（現(xiàn)在）或過去完成時(過去）。與將來事實相反Would/might/could+v原如:Ifyoufailintheexam,youwIfIwereyou,Iwouldinvitehimtotheparty.如果我是你,我會邀請他參加聚會。IwouldhavearrivedmuchearlierifIhadnotbeencaughtinthetraffic.如果沒有堵車,我會到的早一點兒。IfIwereyou,Iwouldinvite其他的連詞:unless

conj.除非,若不,除非在……的時候Youwillfailtoarrivethereintimeunlessyoustartearlier.

如果你不早點動身,你就不能及時趕到那兒。

Unlessitrains,thegamewillbeplayed.

除非下雨,比賽將照常進行。其他的連詞:unlessconj.除非,若不,除非在另外還有incase,as/solongasIncaseitrains,donotexpectme.如若下雨,就不要等我了。Aslongasyoupromisetocome,I’llwaitforyouuntilyoucome.只要你答應,我就等你來。另外還有incase,as/solongasbutfor

若非,要不是Butfortherain,weshouldhaveapleasantjourney.要不是下雨,我們的旅行肯定會很愉快。Butforyourhelp,weshouldnothavefinishedintime.要不是你幫忙,我們肯定不能及時完成任務。butfor若非,要不是Butfortherai1.

Ifyou____acake,yourhost______verypleased.(take,be)2.

Unlesstheweather____better,I_______athome.(get,stay)3.

He_______homeearlyifhe__________well.(go,notfeel)takewillbegetswillstaywillgodoesn’tfeelIfIseeherI’llinvitehertotheparty.(see,invite)Exercises1.

Ifyou____acake,yourho4.

What____I__ifthey____aboutpolitics?(do,talk)5.

Ifyou_____yourhand,thetaxi_________.(raise,stop)6.I__________anythingunlesshe____me.(notsay,ask)raisewillstopwillnotsayasksshalldotalk4.

What____I__ifthey____7.Thevolleyballmatchwillbeputoffifit________.

A.willrain

B.rains

C.rained

D.israiningB7.Thevolleyballmatchwillb8.—ShallBrowncomeandplaycomputergames?

—No,___