may,must直接提问,need用do提问.
must 的过去时是had to
may的过去时是might
need 是名词,需要形容词来修饰他.
may……?
yes ,I may./No,I mayn't.
must……?
yes,I must./no,I needn't/no,I don't have to.
do you need……?
yes ,I do./no,I don't.
OK,就是这样,希望可以得到你的认可.!
其实may和can的意思是一样的,只是may 只能在I或WE后面,can什么人称都行.
may……?yes,you may.
can ……?yes ,sb.can.