英语中is \was\ were\ be\ are\had\have\done分不清楚啥时候用

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/12 14:17:09

英语中is \was\ were\ be\ are\had\have\done分不清楚啥时候用
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$英语中is \was\ were\ be\ are\had\have\done分不清楚啥时候用$

你应该问的再详细点儿,这样说那得说到啥时候去啊.你是分不清啥时候用BE动词、助动词?还是分不清啥时候用过去式或过去分词?
he is a bird 他是一只鸟
he was a bird 他以前是只鸟
if he were a bird 如果他是一只鸟（虚拟）
he could be a bird 他可能是只鸟
he had/has been a bird 他过去是只鸟,现在不是了（这里的had是助动词,帮助been,无意义）
he has /had a bird 他有/过去有一只鸟（had是动词,表示有）
done:do 的过去分词.
不懂再继续问问吧：）一起学习

英语中is \was\ were\ be\ are\had\have\done分不清楚啥时候用用“have,has,had,there is,there are,there was,there were”填空. have has had是怎么回事,什么样子时在用什么?is are（was,were）呢? 英文语法我想请问 are is be was were have had in on at of for to 这些词的 be.am.is.are.were.was.been.being.分别是什么时候用的帮忙用was/were doing .when ; be about to do.when;had just done. 英语中am,are,is,was,were,there is,there are,has,have,does,do 的主选用“have,has,had,there is,there are,there was,there were”填空. was/were supposed to do 和is/are supposed to have done是一样的意思吗何时使用BE【am/is/are/was/were/has（have）been】? had juest done..when ,were/was doing..when,be about to do .. 英语系动词的用法.英语中有 was .is,are,has been,have benn,will,would,were