be 是系动词 ,一般现在时的情况下 有3种“ am ,is ,are ”。“am,is ”的过去式是" was ",“are”的过去式是"were"。
be过去分词都是been。
is例句:He is good boy.他是个好孩子。
am例句:I am a teacher.我是一名老师。
are例句:we are friends.我们是朋友。
was例句:The building was constructed from the design of that architect.这幢大楼是按那位建筑师的设计建造的。
were例句:If I were you, I would have failed. 如果我是你,我可能会失败的。
been例句:Those rooms have been assigned to us. 那些房间已经分配给我们。
标签:过去
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