have的过去式和过去分词是什么？

have的过去式和过去分词是had，意为有;持有;占有;由…组成;显示出，带有(性质、特征)。

例句Weve had one or two problems ─ nothing serious.

我们有一些问题，不过没什么大不了的。

Had I known that I would never have come.

要是早知道，我绝不会来的。

He had to go to hospital for treatment.

他不得不去医院接受治疗。

We had to work within the parameters that had already been established.

我们必须在已设定的范围内工作。

I\'ve had to put my plans into cold storage.

我不得不把我的计划暂时搁置起来。

I had a long conversation with her the other day.

前几天我与她作了一次长谈。