HAs HAD 和HAVE HAD区别HAVE HAD 和HAS HADE

HAs HAD 和HAVE HAD区别HAVE HAD 和HAS HADE had been 和 has/have been的区别是什么? have has had或 having +been 的区别和用法 has had 和had had有什么区别? 求have,has,had的区别? 怎么区别has have had用法? i have had和 i had had 有什么区别? has down 和had down的区别 had和has用法上的区别 have come和had come的区别 have been / has been / had been 的区别 have、had、has的区别与用法是什么?如题, 什么时候用have,had,has 关于had has等英语语法has been V+ing和had been V+ing的区别. had.has 和have都在什么时候用 关于时态的问题have beenhave been 和have had been有什么区别?原句是这样的：I've heard has been good.有have也有has 请问HAS BEEN和 HAVE BEEN HAD BEEN的用法以及分别加DONE后的用法请问HAD BEEN 单复数用法有区别吗 have done和had done的区别如题,为什么有一题中文是他妹妹已经死了,用has gone而不是had gone