最佳答案:看情况的do i need to...:yes you do.no you don't.may i .:yes you may.no you may not.m
最佳答案:都应该用yes,please.表示“好的,请便” 人家问“may I...”是种委婉的客气说法,回答当然也要客气,而yes,you may比较生硬的语气,通常不
最佳答案:must 表示必须、一定时,Must...肯定回答:Yes,...must.否定回答:No,...needn't.(特别要注意否定回答不能用mustn't.因为
最佳答案:must:肯定must(必须),否定must not/mustn't/needn't(不准,禁止)He mustn't be there 他一定不在那儿.Mus
最佳答案:B妈妈,我可以现在看电视吗?不,你必须先做作业.本句No后面实际上省略了:you can't/mustn't.you ___ finish your homew
最佳答案:否定may用can't或mustn't肯定用can回答
最佳答案:yes,you can./no,you can't.yes,you must./no,you needn't.yes,you need(must)./no,yo
最佳答案:情态动词有can (could), may (might), must, have to, shall (should, will (would), dare
最佳答案:may:yes,you mayno,you can'tmust:yes you mustno you needn't