-
最佳答案：can could 能力（体力,智力,技能）允许或许可（口语中常用）可能性（表猜测,用于否定句或疑问句中）Yes,…can.No,…can’t.may 可以（问
-
最佳答案：I was happy.I wasn't happyWas I happy?You were a student last year.You weren't a
-
最佳答案：May I come in?No,you can't.Must he wait here?No,he needn't.Could you help me?Sor
-
最佳答案：Sorry,you can't.
-
最佳答案：yes,you must.no,you needn't.
-
最佳答案：？？
-
最佳答案：isIs the woman in yellow your mother?Yes,she is./ No ,she isn'tIs the little gir
-
最佳答案：不用的,例如：he is playing basketball 回答：No,he isn't就可以了.
-
最佳答案：can 能,能够,有能力...must 必须/一定/一定要,must be一定是（表示有把握的推测）may可能,也许/可以（用于客气地询问是否可以做某事..）/
-
最佳答案：1.May I的回答一般用Yes,you can.或No,you can't.2.success successful succeeda success一个成功