情态动词should的用法

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1、should   modalverbIrregular:1.usedtoshowwhatisright,appropriate,etc.,especiallywhencriticizingsomebody'sactions（常用于纠正别人）应该，应当Youshouldn'tdrinkanddrive.你不该酒后驾车。Heshouldhavebeenmorecareful.他应当更小心点儿才是。2.usedforgivingoraskingforadvice（提出或征询建议）该，可以Youshouldstopworryingaboutit.你

2、不应该再担心那件事了。ShouldIcallhimandapologize?我是不是应该打电话向他道歉？Ishouldwaitalittlelonger,ifIwereyou.假如我是你的话，我会再等一会儿。‘Shedoesn'tthinkshe'llgetajob.’‘Sheshouldworry,withallherqualifications(=shedoesnotneedtoworry).’“她担心找不到工作。”“她那么好的条件，可真该担心的。”ironic3.usedtosaythatyouexpectsomethingistru

3、eorwillhappen（表示预期）应该会，可能Weshouldarrivebeforedark.我们天黑以前应该能赶到。IshouldhavefinishedthebookbyFriday.到星期五我应该能读完那本书。Theroadsshouldbelesscrowdedtoday.今天路上该不那么拥挤了吧。4.usedtosaythatsomethingthatwasexpectedhasnothappened（表示与预期相反）本应，本当Itshouldbesnowingnow,accordingtotheweatherforecas

4、t.按天气预报，现在该下雪才是。Thebusshouldhavearrivedtenminutesago.公共汽车十分钟以前就该到了。5.usedafterIorweinsteadofwouldfordescribingwhatyouwoulddoifsomethingelsehappenedfirst（与I或we连用代替would，表示虚拟结果）就将BritishEnglishformalIfIwereaskedtoworkonSundays,Ishouldresign.要是叫我星期天加班，我就辞职不干了。6.usedtorefertoa

5、possibleeventorsituation（表示可能）假如，万一formalIfyoushouldchangeyourmind,doletmeknow.假如你改变主意的话，一定要告诉我。Incaseyoushouldneedanyhelp,here'smynumber.万一你需要帮助的话，这是我的电话号码。Shouldanyonecall(=ifanyonecalls),pleasetellthemI'mbusy.如果有人打电话来，请告诉他我正忙着。2.usedasthepastformofshallwhenreportingwhat

6、somebodyhassaid（在间接引语中用作shall的过去时）Heaskedmewhattimeheshouldcome.(=Hiswordswere:‘WhattimeshallIcome?’)他问我他应该什么时候来。Isaid(that)Ishouldbegladtohelp.我说我乐意帮忙。formalBritishEnglish3.usedafterthatwhensomethingissuggestedorarranged（用于that引导的、表示建议或安排的从句中）BritishEnglishSherecommendedt

7、hatIshouldtakesometimeoff.她建议我应该休息一段时间。Inorderthattrainingshouldbeeffectiveitmustbeplannedsystematically.为使培训有成效，必须有系统的计划。4.usedafterthataftermanyadjectivesthatdescribefeelings（用于许多表示感情的形容词后的that从句中）I'manxiousthatweshouldallowplentyoftime.我殷切希望我们能留出充裕的时间。Ifinditastonishing

8、thatheshouldbesorudetoyou.他竟然对你这样无礼，真叫我吃惊。5.usedwithIandweinpoliterequests（与I和we连用，表示客气地请