我们在唱歌，他们在跳舞。

We are singing and they are dancing.

youdao

我们在唱歌。我们在跳舞。

We are singing. We are dancing.

youdao

我们在唱歌而他们在跳舞。

We are singing while they are dancing.

youdao

我们在唱歌么？

Are we singing?

youdao

我们在唱歌。

We are singing now.

youdao

我们在唱歌。

We are singing.

youdao

有只小鸟在唱歌呢，它说今天的天气不错，让我们到外面去玩。

A bird is singing to tell us that it's a nice day.

youdao

整个晚上我们都在唱歌跳舞。

We were singing and dancing all evening.

youdao

有人在唱歌，我们顺着歌声去看看好吗？

Some people sing in, we have to look at you singing along?

youdao

我们来之前，她一直在唱歌。

She had been singing until we appeared.

youdao

我们曾听见他在唱歌。

We heard him singing.

youdao

我们曾听见他在唱歌。

We heard him singing.

youdao