代表时间s是什么意思(s代表的时间单位是什么)

英语表示时间的连词

连词before, after, since, until, when, while, as和as soon as

用来表示某事发生时间。它们被称为时间的连词。

Take the toy out of the box before you throw the box away.

在你扔掉盒子之前，先把玩具从盒子里拿出来。

Before you leave the house, be sure that you’ve got your backpack.

在你离开房子之前，一定要确定你带了你的背包。

I usually do my homework after I have my dinner.

我通常在吃完晚饭后做作业。

After I went to bed, I heard a strange noise downstairs.

我上床后，听到楼下有奇怪的声音。

We’ve moved to a new house since I last wrote to you.

自从我上次给你写信以来，我们已经搬到新房子里去了。

Since the new teacher arrived, we all enjoy our work more.

自从新老师来了，我们都更喜欢我们的工作了。

You can’t watch TV until you’ve done your homework.

你做完作业才能看电视。

Until the rice is cooked, we can’t eat dinner.

直到米饭煮好，我们才能吃饭。

I’ll call you when I get home.

我一到家就给你打电话。

When the wind blows, the branches on the tree bend.

风一吹，树枝就弯了。

Dad watches TV while he does his exercises.

爸爸一边做练习，一边看电视。

While we’re waiting for the bus, let’s play a game.

在等公共汽车的时候，我们来玩个游戏。

People stand back as the train goes through the station.

火车进站时，人们往后退。

As the president’s car goes past, everybody waves.

当总统的车经过时，每个人都向他挥手。

We went inside as soon as it started to rain.

天刚开始下雨，我们就进屋了。

As soon as you’ve finished your homework, let me see it.

你一做完作业就给我看。