We had a day out in the country.

　　我們在鄉下玩了一天。

　　He had to go to the hospital for treatment.

　　他不得不去醫院接受治療。

　　Had I known that I would never have come.

　　要是早知道，我絕不會來的。

　　He had to go to hospital for treatment.

　　他不得不去醫院接受治療。

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

　　我不得不把我的計劃暫時擱置起來。