have的过去式和过去分词和现在分词是什么

We had a day out in the country.

我们在乡下玩了一天。

He had to go to the hospital for treatment.

他不得不去医院接受治疗。

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。

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。