否定回答：
1.No, you cant / mustnt.
2.Im afraid you cant.
3.Youd better not.
注：否定回答不能用 No, you may not .
扩展资料
肯定回答：
1)Yes, you can/may.
2)Of course (you can).
3) Yes, please .
否定回答：
1.No, you cant / mustnt.
2.Im afraid you cant.
3.Youd better not.
注：否定回答不能用 No, you may not .
肯定回答：
1)Yes, you can/may.
2)Of course (you can).
3) Yes, please .
