have的过去式和过去分词都是had，但是具体应用有区别。
1.表示过去用过去式：We had a meeting yesterday.(发生在过去)。
2.表示现在完成（助动词的现在式+过去分词）：We have had a meeting just now.(虽然发生在过去，却对现在产生了影响，即会议的进程在说话时依然清晰可见)。
3.表示过去完成（助动词的过去式+过去分词）：We told him we had had a meeting the day before yesterday.（发生在told的过去，即过去的过去）。
has
1、This is a clear demonstration of how technology has changed
这清楚地表明了技术已有了怎样的进步。
2、There has already been a definite improvement
已经有了显著的改进。
3、The committee has been dissolved
委员会已经解散了。
4、She enchanted you as she has so many others.
她迷住了你，就像她迷住了其他那么多人一样。
5、The conflict with James has dragged on for two years.
与詹姆斯的冲突拖了两年。
关于have的过去分词，have的过去式和过去分词是什么给点例句。。的介绍到此结束，希望对大家有所帮助。
