may.must.mustn't的意思
英语可能性啥的may、might、maybe、can、can't、must、mustn't、possible、proba
用适当的情态动词can,may,must,mustn’t,needn’t填空
may can must need的区别及may not ,can't,mustn't,needn't的区别?
用can,may,must,can't,mustn't填空.
用can,may,must,can't,mustn't 填空
May children play with fire?的答句!(用must,mustn't)
may not与mustn't的区别
选择适当的情态动词填空 can,may,must,shall,would,should,can't,mustn't,ne
用should,shouldn’t,must,mustn’t,needn’t,can’t ,may,have to 填空
May i go swimming now?no,you (mustn't/may not).YOU must fini
用could,can,can't,must,mustn't need't may填空
选用con,could,may,must,shall,will,would,con’t,mustn’t,needn’t,