英語你我他文法篇22:be動詞（在）
be動詞(3)在
What are you doing? 你在做什么？
I'm reading the newspaper. 我在看報紙。
I'm reading the news on the computer. 我在看網(wǎng)絡(luò)上的新聞。
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?
昨晚你去他家的時候，他在干嘛？
He was taking a shower. 他正在洗澡。
What will he be doing at ten tomorrow morning?
明天早上十點他會在干嘛？
He will be whitewashing their new house. 他會在粉刷新房子。
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，那就是問題之所在。
being n. 存在；生存；生命體；生物
a human being 一個人 human beings 人類
