have的过去式和过去分词是什么?给点例句.

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,...