had和has用法上的区别

had和has用法上的区别 have has had或 having +been 的区别和用法 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、had、has的区别与用法是什么?如题, has down 和had down的区别 怎么区别has have had用法? have和has的用法及区别 have has的用法和区别 完成时态has和had的用法什么时候用has什么时候用had what had happened和 what has happened有什么区别翻译和用法上有什么区别“he told me what______ ” 中填这两个回答有什么不同的效果 关于had has等英语语法has been V+ing和had been V+ing的区别. has和have的区别和用法.我明天月考 with has和 have got的区别和用法. has had 和had had有什么区别? had been 和 has/have been的区别是什么? 初中英语语法has been和had been的区别 has gone to和had gone to 的区别 has had 得区别及用法,希望详细且易懂!