助动词和实义动词能做谓语 am is are was were +doing这里的am is are was were

助动词和实义动词能做谓语 am is are was were +doing这里的am is are was were am is are was were作为助动词时,后面的谓语动词还是原型吗. is----------was.are---------were.am---------? am is are was were 填写适当的动词be(am, is, are, was, were) 用“am/is/are/was/were"填空 用am is was are were造句 用am,is,are,was,were填空. am,is,are,be,been,was,were的区别 am/is/are的过去时分别是was还是were? 助动词怎么用?is am are was were分别用在什么时候``有什么区别``? 用is,was are,were am,was造句,