可用于一般过去时。
had
v. 拥有（have 的过去式和过去分词）；患病（have 的过去式和过去分词）
aux. 已经（用于过去完成时和过去完成进行时）
例句
Everything had gone.
一切都过去了。
The car had had it.
这辆车无法修复了。
We had walked further than I had realized.
在我不知不觉中我们已走得很远。
He had heard that the trophy had been sold.
他听说那个奖杯已经被卖掉了。
We\'ve had words.
我们吵过架。
