情態(tài)動(dòng)詞及情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)

情態(tài)動(dòng)詞有哪些?can/may/must/will/shall/should/oughttoneed/darehadbetter/wouldrather,usedto/ haveto/beableto第一頁(yè)1第二頁(yè)，共14頁(yè)。情態(tài)動(dòng)詞的含義序號(hào)原形過(guò)去式主要含義1cancould2maymight3mustmusthadto4needneeded5daredared6willwould7shallshould1.能力2.請(qǐng)求/準(zhǔn)許3.可能性1.請(qǐng)求/準(zhǔn)許2.可能性*3.祝愿1.義務(wù)(必須);2.猜測(cè)(肯定)需要敢愿意1.征求意見(jiàn)2“應(yīng)該”(should)第二頁(yè)2第三頁(yè)，共14頁(yè)。序號(hào)原形過(guò)去式主要用法8beabletowas/wereableto9havetohadto10oughttooughtto11usedto12hadbetter13wouldrather“能夠”（能力）“不得不/必須”“應(yīng)該”“過(guò)去（常常）”“最好”“寧愿”情態(tài)動(dòng)詞的含義第三頁(yè)3第四頁(yè)，共14頁(yè)。

can/couldbedone

mustbedone

shouldbedone

may/mightbedonehadbetterbedone

havetobedone含情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)：情態(tài)動(dòng)詞+be+PP第四頁(yè)第五頁(yè)，共14頁(yè)。否定式：情態(tài)動(dòng)詞+not+be+p.p

can/couldnotbedone

mustnotbedone

shouldnotbedone

may/mightnotbedonehadbetternotbedone

havenottobedone第五頁(yè)第六頁(yè)，共14頁(yè)。疑問(wèn)式：情態(tài)動(dòng)詞+主語(yǔ)+be+p.p

can/could+主語(yǔ)+bedone

must

+主語(yǔ)+bedone

should+主語(yǔ)+bedone

may/might

+主語(yǔ)+bedonehad+主語(yǔ)+betterbedone

have+主語(yǔ)+tobedone第六頁(yè)第七頁(yè)，共14頁(yè)。1.Icanfinishthework.Theworkcanbefinishedbyme.Cantheworkbefinishedbyyou?2.We

shouldplantmanymoretrees.Manymoretreesshouldbeplantedbyus.

Shouldmanymoretreesbeplantedbyus?第七頁(yè)第八頁(yè)，共14頁(yè)。Teenagers

shouldbe

allowedbyparentstodrivethecar.3.Parentsshouldallowteenagerstodrivethecar.Shouldteenagers

be

allowedbyparentstodrivethecar?4.Youcanpasstheexam

ifyoustudyhard.Theexamcanbepassed(byyou)ifyoustudyhard.Cantheexambepassed(byyou)ifyoustudyhard?第八頁(yè)第九頁(yè)，共14頁(yè)。water(澆水)Treesmustbewatered

bythemeveryday.Theymustwatertreeseveryday.Musttreesbewatered

bythemeveryday?第九頁(yè)第十頁(yè)，共14頁(yè)。Peoplemaycatchfishintheriver.Fishmaybecaughtintheriver(bypeople).Practice:第十頁(yè)第十一頁(yè)，共14頁(yè)。1.Mymother

cancookdeliciousmeals.

Deliciousmealscanbecookedbymymother.2.Students

willuse

thesetextbooksnextterm.Thesetextbooks

willbeusednexttermbystudents.3.Youshouldwatertreesoften.Treesshouldbewateredbyyouoften.4.Youmustnotplanttreesinverydryearth.Treesmustnotbeplantedbyyouinverydryearth.第十一頁(yè)第十二頁(yè)，共14頁(yè)。3.Sixteen-year-oldsshouldbeallowedtodrive.(先改為否定句，再改一般疑問(wèn)句)

Shouldsixteen-year-oldsbeallowedtodrive?Sixteen-year-oldsshouldn’tbeallowedtodrive.Yestheyshould./No,theyshouldn’t