I can't understand why he is being so selfish. He isn't usually like that.

我不明白他此刻怎么这么自私。他平时不这样。

When I touched him on the shoulder, he turned around.

我拍他的肩膀，他转了过来。

Would you like to see the factory, I'd like to show you around.

你想参观一下工厂吗？我可以领你四处看看。

He lives in a two-room apartment.

他住在一套两房公寓里。

Have you seen this article in the paper?

你在报上看到过这篇文章吗？

They dare not tell the truth.

他们不敢说实话。