动词系动词情态动助动词实义动系动词 + 表语情态动 + 动词原形助动词 + 动词原形独立充当谓语充当谓语系动词be 动词“ 保持”“变化”感官动词be+adv
+adj“ 如何是”become,seem,turn,grow,get,keep,staylook,sound,taste,smell,feel常接形容词作表语主谓一致情态动词意思答语表示推测may 答语 : 肯定 Certainly
/Yes,you can
否定 Sorry, but you can’t/mustn’t“ 一定” must“ 必须” Must I…
Yes, you must
No, you needn’t/don’t have to
“ 不得不” Do I have to
Yes, you must
No, you needn’t/don’t have to
“ 需要”实义动词: not need to do sth
情态动词: needn’t do sth
Would you like to do
答语“ I’d like to” “I’d like to, but
”had better “ 最好 ( 不 ) 做某事”You’d better do…/You’d better not do… “ 可能” may,might,could“ 不可能” can’t助动词狭义概念:“赠送的”扩展概念:“自带的”do,does,did凡谓语由两部分构成之前者句型操作及答语实义动词身份助动词身份 / 强调功能实义动词时态语态名称被动: be+done及物动词必须跟宾语不及物动词不直跟宾语谓动一般现在时一般过去时现在进行时过去进行时一般将来时★过去将来时现在完成时★过去完成时do/doesdidbe+doingwas/were+doingwill+dowould+doha