be动词(3)在

What are you doing? 你在做什么？

I'm reading the newspaper. 我在看报纸。

I'm reading the news on the computer. 我在看网络上的新闻。

What is he doing? He is taking a shower. 他在做什么？洗澡。

What was he doing when you went to his house last night?

昨晚你去他家的时候，他在干嘛？

He was taking a shower. 他正在洗澡。

What will he be doing at ten tomorrow morning?

明天早上十点他会在干嘛？

He will be whitewashing their new house. 他会在粉刷新房子。

I think; therefore, I am. 我思故我在。

To be or not to be, that is the question.

生存或死亡，那就是问题之所在。

being n. 存在；生存；生命体；生物

a human being 一个人 human beings 人类