have & has & had用于句子中有什么区别呢

have & has & had用于句子中有什么区别呢 have has had ...是有什么区别? 请问have\has\had done和have\has\had been done 各有什么区别?been和gone又 have和had在现在完成时中有什么区别 had+过去式 have/has+过去分词有什么区别,都是什么时态? i have had和 i had had 有什么区别? HAs HAD 和HAVE HAD区别 英语中has和have有什么区别? 句子中的has been ,have been,had been 代表什么? never have 和never had 有什么区别.列举句子谢谢 had/have/has gone/been 的区别 怎么区别has have had用法?