I haven't had time to relax 这是什么时态吗?为什么要用这个时态?
I haven't seen you for a long time 是什么时态 不是现在完成时吗?
i haven't heard from her for a long time什么时态?haven't heard 换
I haven't been back to the island是什么时态?为什吗要用been?
had had to 是什么时态
英语句子时态问题Why did you come to China?这句话是什么时态啊,为什么要用这个时态呢?
i haven't heard from her for a long time什么时态?
By the time I got outside,the bus had already left 这是什么时态啊
what time does boy goes to school?这里为什么用does,还有这句话是什么时态.
had had是什么时态
i had been trying hard to get high score.这是什么时态?
I haven't made my mind yer.什么时态
i had just received a letter from my sister.这是什么时态,这种时态一般怎么用