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1、GrammarmodalverbsII1.Oughtto表应该做的事：Yououghttodoitcarefully.表非常可能的事：Heoughttobeherebynow.oughtto表应该，语气＞should2.oughtto的否定句形式是oughtn’tto,一般疑问形式是将ought置于主语前.eg:Weoughtnottostartsolate.3.在反意疑问句中常常省略to,用oughtn’t或是shouldn’t.YououghttohavehelpedhimwithhisEnglish,___
2、_____?won’tyouB.oughtnotyouC.shouldn’tyouD.wouldn’tyou2.havetohaveto表示客观需要去做的事情，意为“必须，不得不。”Ihavetogetthestationearlytocatchthefirsttrain.Wemissedthebussowehadtowalkhome.Wehavetoovercomeallkindsofdifficulties.Haveto有多种时态。常见的有：一般将来时Wewillhavetogatherattheschool
3、gateat7tomorrow.一般现在时Ihavetotakemoremoneywithmebecausemygirlfriendhassomuchtobuy.一般过去时Finally,wehadtogiveupourideatoholdapicnicoutsideasitrainedforawholeafternoon.haveto（考点）must表主观意志，而haveto表由于客观因素不得不做完成的事情。Must没有过去式，除在间接引语中可表示过去的时间。在直接引语中表示过去的时间用hadto代替。Itol
4、dherthatshemustgiveupsmoking.Shesaid,“Wehadtogeteverythingreadythatnight.”比较must&haveto即学即用:用haveto完成句子.1.天色太晚了,我现在的得回家了.Itistoolate,soI_____________now.2.昨天我不得不离开.I___________________yesterday.havetogohadtoleave3.他们没必要担心核辐射.They________________thenuclearradi
5、ation.4.我必须马上做吗?----MustIdoitatonce?----No,______________________.don'thavetodon'thaveto选词填空:must,mustn’t,haveto5.现在我不得不走了,因为我妈妈生病了.I_________gonow,formymotherisill.6.我一定要戒烟.I_______stopsmoking.7.晚上你一定不能独自出去.You_________gooutaloneatnight.havetomustmustn't1.Jo
6、hnny,you______playwiththeknife,you______hurtyourself.A.won’t;can’tB.mustn’t;mayC.shouldn’t;mustD.can’t;shouldn’tB2.--MayIpickaflowerinthegarden?--________.A.No,youneedn’tB.Not,please.C.No,youmustn’tD.No,youwon’tCNeedIdo…?Yes,youmust.No,youneedn’t.3.dare&need情
7、态动词实义动词dare否，疑，条darenotdo否,疑don’tdaretododon’tdaredo不用于肯定句肯：daretodoneed否，疑needn’tdo(don’t)needsth(don’t)needtodo肯：must,haveto,oughtto,should注意对need问句的回答:--NeedIfinishtheworktoday?--Yes,________________.No,________________.No,________________.youmustyouneedn’
8、tyoudon’thavetoneedn’t对其它情态动词的回答:--ShallItellJohnaboutit?--No,you__________.--No,you__________.--Mustwedoitnow?--No,you__________.--No,you__________.needn’tdon’thavetoneedn’tdon’thaveto1.
