虛擬語氣入門之虛擬條件句課件

虛擬語氣入門If條件句

Ifyoucool

water,itturnsintoice.①②if

從句主句Ifsentencesif引導的條件狀語從句1.Ifyouheatmetal,itmelts.2.Waterturnsintoiceifyoucoolit.if從句主句從句主句從句主句從句在主句前時，____（用/不用）逗號隔開當主句在前時，則____（用/不用）逗號不用用Ifyoudropaglass,itbreaks.Ifyouheatice,itmelts.主句和從句都用_____________(時態(tài))因為if引導的條件句是_____________一般現在時客觀事實/普遍現象Actionswithdefiniteresults試著自己總結if的用法：

1.Ifyouheatmetal,itmelts.2.Waterturnsintoiceifyoucoolit.3.Ifyoudropaglass,itbreaks.如果if引導的條件句談論的是一種____________時，主句謂語動詞便不用shall/will+動詞原形，而直接用_______時的動詞形式。真理/客觀事實一般現在Actionswithpossibleresults讀下列例句，總結if的用法：1.Ifwerun,we’llgetthereintime.2.Iwillhelpyouifyouaskme.3.Ifyougetuplate,youwillbelateforschool.由例句我們可以知道：在if引導的條件狀語從句中，如果從句談論的是一個有可能發(fā)生的事實以其產生的相關結果，從句用_____________,主句用_______________.一般現在時態(tài)一般將來時態(tài)(主將從現)1.IwillbuildmanyschoolsforthepoorchildrenifIwinabilliondollars.2.Ifyoufreezewater,itwillturnintoice.

3.Myunclevisitsthemuseumifhewillhavetime.正確willturn→turns visits→willvisit,willhave→has判斷正誤，如果有誤，請更正BettywillvisittheHistoryMuseumifit____________(rain)tomorrow.Benwantstoknowifit___________(be)finetomorrow.If引導的條件狀語從句不用將來時，意思為“如果”。If引導的賓語從句可以用將來時，意思為“是否”。doesn’trainwillbe是否如果hard-workingIfshe

is

hard-working,she

will

get

goodgrades.getgoodgradesLookandsayIfyougetuplate,youwillbelateforschool.Lookandsaygetuplatelateforschoolgofishing.IfitissunnythisSunday,we’llgofishing.LookandsaysunnythisSundayIfI

have

alotofmoney,Iwillbuyabighouse.Lookandsayalotofmoneyabighouse包含條件從句的句子為條件句。

1.真實條件句（假設的情況有可能發(fā)生）2.虛擬條件句

(純粹假設/實現可能性不大）IfI

have

alotofmoney,Iwillbuyabighouse.alotofmoneyabighouseIfI

had

alotofmoney,Iwouldbuyabighouse.包含條件從句的句子為條件句。

1.真實條件句（假設的情況有可能發(fā)生）2.虛擬條件句

(純粹假設/實現可能性不大）IfI

had

alotofmoney,Iwould….真實條件句，使用陳述語氣。非真實條件句，使用虛擬語氣。Bequiet!（請安靜。—請求）Nosmoking!(請勿吸煙。—勸告）Keepoffthegrass.（勿踐草坪—禁止）Don’tlitter.（不要亂扔垃圾?！獎窀妫〨oandwashyourhands.（—命令）

祈使語氣使用動詞原形表示與事實相反或根本不可能實現的事.主觀愿望與假設等虛擬語氣if引導的條件狀語從句虛擬條件句IfIwereabird,Iwouldflyintothesky.IfIweretaller,IcouldplaybasketballinNBA.IfIhadalotofmoney,

I

might

buyanisland.If條件中的虛擬語氣時間If條件句主句現在be用weredo用did

wouldshould+dosthcouldmightIfIamastallasYaoMing,Iwouldbeafamousplayer.———were與現在事實相反虛擬Sorry,Idon'thaveanymoneywithme.IfIhadmoneynow,Iwilllendyou.——would與現在事實相反虛擬Ifhe

hadgot

upearlyyesterday,

he

wouldnothavebeenlateforwork.Ifhe__________

（drive)morecarefully,

he_________________(avoid)theaccidentyesterday.haddriven

wouldhaveavoided

懶羊羊：如果我沒有吃太多東西，就不會被灰太狼抓了。IfI_____________toomuchI_________________caught.wouldn’thavebeenhadn’teatenIfhe

hadgot

upearlyyesterday,

he

wouldnothavebeenlateforwork.Ifhe

haddrivenmorecarefullyyesterday,

he

couldhaveavoidedtheaccident.IfIhadn’teatentoomuch,Iwouldn’thavebeencaught.

If條件中的虛擬語氣時間If條件句主句過去haddonewouldshould+havedonesthcouldmight對將來情況的假設

時間條件從句

主句將來一般過去時(did)should等+動詞原形were+todoshould+動詞原形Ifitrainedtomorrow,Iwouldstayathome.Ifitweretoraintomorrow,

Iwould

stay

athome.Ifitshould

raintomorrow,

Iwould

stay

athome.If條件中的虛擬語氣時間If條件句主句將來did/wereshoulddoweretodowouldshould+dosthcouldmight判斷是否虛擬2.判斷虛擬時間3.動詞正確if條件句

虛擬語氣應對策略if從句動詞

主句動詞現在過去式(be常用were)would/c