900分钟吃透高中语法随到随学21课时lesson 10

Lesson10情态动词半情态动词：haveto、hadto、dare、oughtto 、have oughthaveought（表义务、责任（含有责备意味（用于各人称 表 中 a thedogImusthave can’tshebeathome becan’thave throughCould hercouldhavedone there,itso right;mayhaveSheisn’thereyet;herHemightnotbetheremighthaveMight missedthe arriveat thebyoughtnotshouldn’thavedone对过She needn’thavedone(Therewasplentyoftimethen,. 情态动词表推测must语气最强，依推测的可能性从大到小其顺序一般是： ①- shebedoing-Shemay/might theflowers.Shecan’t ②He thepaperfor表示“能、会”ableto；表示“允许”can(could)Maymight表“能力”时，两者可换用；但canwill,havebeableto,更多的时态，若表示“某事终于成功”应用was/wereabletoIcan’tjumpsohighnow,butIcouldwhenIwasyoung.Shecould/wasabletoplaythepianowhenshewasten.WewillbeabletouseitHewasabletogetthereinthecan。clmmgtcan或maycould和-CouldIuseyourmobile-Yes,ofcourseyou-MightItroubleyoufora某人或某人“不得不（必须）做某事”must无人称、时态和数的变Motherisill.ImustlookafterMotherisill.IhavetodoWemustdomorningexerciseseveryday,buthehastodoittwicetoday.He’llhavetogetupearlyMygrandfatherhadtobegthestreetwhenhewasourmustnotneednotmaynothaveto,notnecessary）;maynotItmaynotrain.Youmustn’ttellheraboutit.(=Don’ttellheraboutit.)Youneedn’trunsofast.(=Youdon’thavetorunsofast.=Itisnotnecessaryforyoutorunsofast.)hadbetterhad,would均无“过去”含义，其后意为“最好”hadbetternotdo;Han...(not)betterdo...?Wouldrather意为“宁愿”，表do;若在“两者”thanYouhadbetternotgothereIwouldrathertellyoumyWouldyouratherhaveteaorI’dratherdrinkteathan“不被选择”的对象；would后可接“that从句”，注意从句的时5.Wewouldrather(that)youcameheretomorrow.MayIwatchTVafterYes,please./Ofcourse./No,youcan’t/mustn’t/maynot/you’dbetternot.Mustwedoit 句无Ifyoudaredo,../Idaredarenot(to)答 ：示例 yourhomeworkifyoudidn’twatchTVall示例2：You yourhomeworkifyouhadn’twatchedTVall示例 myhomeworkifIdidn’twatchTVall(2006上海)Blackholes notbeseendirectly,sodeterminingthenumberofthemisatoughtask.A. B. C. D.(2007上海Guesswhat!IhavegotAformyterm--Great! readwidelyandputalotofworkinto B.C.must D.should(2008上海)Accordingtotheairtrafficrules,you switchoffyourmobilephonebeforeA. B. C. havebeenTomthatparkedthecarhere,asheistheonlyonewithaA. B. C. D.--Oh, havedoneitasyesterdaywastheA. B. C. D.(2010全国I)Justbepatient. expecttheworldtochangesoA. B. C.may D.will(2010辽宁)Doctorssaythatexerciseisimportantforhealth,but beregularA. B. C. D.(2010陕西MayItakethisbookoutofthereading--No, .You