英语中am,are,is,was,were,there is,there are,has,have,does,do 的主

英语中am,are,is,was,were,there is,there are,has,have,does,do 的主 用“have,has,had,there is,there are,there was,there were”填空. 选用“have,has,had,there is,there are,there was,there were”填空. 用is ,am ,are ,have ,has ,can ,do ,does ,填空 用"There is ..." "There are ..." "There was ..."There were .. there is ,there are there was there were 怎样区分疑问句中使用am is are was were还是do does did呢? 英语中is am are do does的用法是? is----------was.are---------were.am---------? am is are was were am is are do does did will shall can was were must 英语系动词的用法.英语中有 was .is,are,has been,have benn,will,would,were