We're going to have supper.

我们要吃晚饭了。

It is the time to have supper.

快到吃晚饭的时间了。

It's nearly time to have supper.

快到吃晚饭的时间了。

It's time to have supper.

吃晚饭的时间到了。

It's time to have supper.

该是吃晚饭的时候了。