Needn't + do还是+ to do
Needn't + do还是+ to do
needn't 后面加to do 还是 do?
they needn′t to do sth 还是 they needn′t do sth?
have to,must,do not need,needn't的区别
Do you have to buy this hat?No,i needn't necessary为什么填needn'
don't have to do sth 是否等于don't need to do sth 和needn't do st
needn't do sth与don't need to do可以通用吗?
don't need to do 与needn't do 有什么区别?
Needn't have done 和needn't do的区别!
You ()leave,do you?But they must leave now.A.needn't to B.do
needn't do 和dont need to do希望得到详细的语法解答!
needn't和do not need to do有何分别?