作业帮have 动词过去分词.和have been 过去分词的用法
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have 动词过去分词.和have been 过去分词的用法
have 动词过去分词.和have been 过去分词的用法
have 动词过去分词.和have been 过去分词的用法
had
have been是现在完成时
基本结构：主语+have/has+动词的过去分词(p.p）（V-ed） e.g done
现在完成时用法(8张)
①肯定句中：主语+has/have+动词的过去分词(p.p0)（V-ed）+宾语.
②否定句中：主语+haven't/hasn't+动词的过去分词（p.p）（V-ed）+宾语.
③一般疑问句中：Have/Has+主语+动词的过去分词（p.p)（V-ed）+宾语.（末尾用问号）
用法要点
1.现在完成时不能单独与准确时间连用,（如表示过去的时间状语）
如yesterday(morning、afternoon),last(morning、afternoon）等,除非与for,since连用.
2.现在完成时往往同表示不确定的过去时间状语连用
如already（肯定）,yet（否定,疑问）,just,before,recently,still,lately,never等：
He has already obtained a scholarship.
I haven't seen much of him recently (lately).
时态
We have seen that film before.
Have they found the missing child yet?
3.现在完成时常常与表示频度的时间状语连用,
如often,sometimes,ever,never,twice,on several occasion等：
Have you ever been to Beijing
I have never heard Bunny say anything against her.
I have used this pen only three times.It is still good.
George has met that gentleman on several occasions.
去been加ing
have done是主动形式；have been done是被动形式，你就根据句子的意思判断就可以了