to be do是什麼時態

We will be having a meeting to decide what to do.

我們將開會決定該做什麼。

How long he'll be able to do so is a moot point.

他還能這樣做多久是一個未知數。

We were rather hoping you'd be able to do it by Friday.

我們希望你最好能在星期五之前做這件事。