canwouldnt behave practisedwould have accomplishedwould have hadcanhad drivenhad caughtshouldhad删除第一个to删除let前的tocanshould或删除canchosechoosearewere2.must 和 have to 的用法3.shall 和 should，ought to 的用法4.need 和 dare 的用法5.will 和 would 的用法6.“情态动词have done”的用法willcouldntcould(2)宾语从句(3)表语从句(4)同位语从句(5)两个固定句式中的虚拟语气would bewaswould have arrived(should)eatwere madeMustwouldwould have seenshallmust have studiedspentspendlistened前加hadhelped前加haveshouldmustamwereshould be foundedbetteruniversitiesdonation(s)withwhichstandingknownaandshelvestakenexpressingHonestlythat/whichknewaforwas toldbehaviour
