什麼情况下人称才接am are is was were
is----------was.are---------were.am---------?
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.
什么情况下be是不用变成am is are was were 的
用is,was are,were am,was造句,
填写适当的动词be(am, is, are, was, were)
英语用am,is,are,was,were造句?
am,is,are,be,been,was,were的区别
am\are\is was\were been 分别是什么时态?
1、用 am ,is ,are ,was ,were ,填空