doesn't与don'tdo与does句子开头加do或does是什么意思,句子末尾加do,doesn't,does,don't是什么意思比如末尾加:Yes,ldo.No,hedoesn't.Yes,shedoes.No,wedon't

Question

doesn't与don't do与does
句子开头加do或does是什么意思,句子末尾加do,doesn't,does,don't是什么意思比如末尾加: Yes,l do. No,he doesn't. Yes,she does. No,we don't

Answer 1

do/does 是助动词,提问用,用于句首,do ,第一,二人称,does第三人称,doesn't,don't在这里仍然是助动词,起否定作用,.则用在句尾,用于省略作用,例如,i love you,and you?B:i love you,too.而在这里B可以用：yes ,i do 用do=love you ,too.省略后面的东西