情态动词 he sing an english song

情态动词 he sing an english song Can you sing an English song?是一般疑问句还是特殊疑问句就是情态动词在句首的 Joe was an excellent swimming before,he ( )用适当的情态动词swim across the river.原因呢 He sing songs.He是单数第三人称,动词sing怎么变? does he need to know?这里的need为什么不能当情态动词用?构成情态动词的条件是什么? 翻译：He began to sing an English song 什么是情态动词,为设么要用情态动词 关于情态动词疑问句Where is could he?Where could he is? Why( )he have a talk with her?( )he do it tomorrow?填情态动词 i believe he--------- do everying he --------to help you 横线处填什么情态动词 i believe he--------- do everying he --------to help you 横线处填什么情态动词 情态动词用法? 英语 情态动词用法 英语情态动词用法 英语情态动词练习题 英语填空情态动词 情态动词过去式 need做情态动词