情態(tài)動詞有cancould)，maymight)，must，haveto，shallshould)，willwould)，dare(dared)，need，oughtto此時可用beableto代替。can只有一般現(xiàn)在時和一般過去時；而beableto則有的beableto，不能用canmaycould，might代替，不是過去式，只是語氣更—CouldIcometoseeyoutomorrow？我明天可以來看mightmaycan'tmustn't，表示“不用“MayI…？”征詢對方時比較正式和客氣，而用“CanI…？”在口語中更Mayyousucceed！愿你成功！(3)must，haveto，，don'thaveto(不必)。如—Mustwehandinourexercisebookstoday—Yes，youmust.(No，youdon'thaveto/youneedn't.)是的，必須今天交。(不，②must是說話人的看法，而haveto則強調(diào)客觀需要。must只有一般現(xiàn)在時，haveto有的時態(tài)形式。如IhadtoworkwhenIwasyourage.我像你這么大時，就必須工作了。①dare作情態(tài)動詞用時，常用于疑問句、否定句和條件從句中，其過去式為dared。如:Hedaren'tspeakEnglishbeforesuchacrowd，darehe？他不敢在人群前說英語，是嗎？②needmust，haveto，oughtto，should代替。如:—NeedIfinishtheworktoday③dareneed作實義動詞用時，有人稱、時態(tài)和數(shù)的變化。在肯定句中，dareto的不定式。在疑問句和否定句中，daretototo的不定式。如Hedoesn'tdaretoanswer.Heneedstofinishhistoday.他今天要完成家庭作業(yè)。①shallWhatshallwedothisevening②shall用于第二、三人稱，表示說話人給對方令、警告、允諾或。如:Youshallfailifyoudon'tworkhard.如果你不努力就會失敗。(警告)Iwillneverdothatagain.③wouldwould表示過去的習慣時比usedto正式，Duringthevacation，hewouldvisitmeeveryotherday.假期里，他每隔一天看我一次。(7)should，oughtto①should，oughtto表示“應該”，oughttoshould語氣重。如:Ishouldhelpherbecausesheisintrouble.我應該幫她，因為她陷入麻煩了。Yououghttotakecareofthebaby.should，oughttoshould。如:Youshould/oughttogotoclassrightaway.你應該馬上去上課。ShouldIopenthewindowcan表示推測(驚訝、懷疑、不相信的態(tài)度)，用于疑問句、否定句和感嘆句中。如:Canthisbetrue？這可能是真的嗎？Thiscan'tbedonebyhim.這不可能是他做的。Howcanthisbetrue？這怎么可能是真的？may小。如:Yourmothermay/mightnotknowthetruth.你可能不知道You'reTom'sgoodfriend，soyoumustknowwhathelikesbest.你是的好朋友你一定Hemustbehomebynow.他現(xiàn)在一定回家了。(斷定他已到家Heoughtto/shouldbehomebynow.他現(xiàn)在應該到家了。(按理應當，不太肯定二、usedto“闖三關usedto后接動詞，表示過去經(jīng)常性或持續(xù)性的動作或狀態(tài)，意為“過去常?！比鏘usedtogetupveryearly.WhenIwasyoung，itusedtobeverycoldinwinter.其否定形式為“didn'tusetodosth.”或“usedn'ttodosth.”；一般疑問形式為“Usedsb.todosth.？”或“Didsb.usetodosth.？”；附加疑問句式為“use(d)n'tsb.”或“didn'tsb.”。beusedto后面接動詞時，表示“被用來做某事”。其中to是不定式符號。如:I'musedtowalkingtoschoolnow.我現(xiàn)在習慣步行去學校。Thecomputerisusedtostoreinformation.這臺電腦被用來信息 returnthebooktothelibraryontime.I (not)findthewaytothe youshowmethe——

Ifinishtheworkright(not).You doitHesaidhe (not)comeHermotherwasill.She stayathomeandlookafterIt'stimeforclass.You stopyingfootballoryou belateforThecloudislifting，soit (not)bearainydayThedeskisnotdirty.You clean—Whatisyourmothergoingtodothis—I'mnotsure.She gotoseemyIfthetrafficlightisred，you crosstheroad.It'sWedon'tneed (work)Hedoesn'tSomestudentsareused

(break)his(ask)theirparentsforhelpwhentheymeetThereused (be)aquietvillageIthinkyouwillbeusedto (live)intheAllofusknowthatcottoncanbeused (make)used (go)toschoolbybike，didn'tThisbook Tom's.Hisnameisonthe truethathewasfooledbyafive－year－oldboy?car Thiskindofknife I basketballwhenIwas muchtimeyingcomputer1. 2. 3. 4. 5.had 7