2013年职称英语卫生类考试情态动词(六),为帮助考生有效备考2013年职称英语考试,精品学习网小编整理了职称英语复习资料,希望对您学习职称英语有所帮助!
6.usedto+v,beusedto+v-ing和beusedto+v
(1)usedto+v意为“过去常常”,“过去一直”;beusedto+v-ing/n(名词)意为“习惯于”;beusedto+v意为“被用来(做某事)”。
(2)usedto只表示过去,而beusedto+v-ing/n可表示现在、过去或将来。例如:
1)Heusedtosmoke.Nowhedoesn't.
2)He'squiteusedtohardwork/workinghard.
3)Theknifeisusedtocutbread.
7.用作情态动词的其他短语
wouldrather,wouldsooner,would(just)assoon,hadrather,hadbetter,hadsooner,cannotbut,may(just)aswell等可用作情态动词。例如:
1)Thesoldierwouldsoonerdiethansurrender.
2)Thebravesoldierwouldassoondieasyieldtosuchanenemy.
3)I'dratherwalkthantakeabus.
4)Ifyoudon'tliketoswim,youmayjustaswellstayathome.
注:这些短语后一般直接跟动词原形。would(had)rather,would(had)sooner,would(just)assoon后可跟that引导的从句,that常省去,从句要用虚拟语气。对现在和将来的假设用过去时,对过去的假设用过去完成时。例如:
1)IwouldratheryoucameonSunday.
2)Iwouldsooneryouhadn'taskedmetospeakyesterday.