It was a difficult situation, when you think about it.

　　仔細(xì)想來(lái)，當(dāng)時(shí)處境是很困難的。

　　What do I think about it? How long have you got?

　　我是怎么想的？說(shuō)來(lái)話長(zhǎng)，你有工夫聽(tīng)嗎？

　　People just don't stop to think about the consequences.

　　人們做事情就是不肯停下來(lái)想想后果。

　　I often think about my friends back home.

　　我常常想起老家的朋友。

　　If you think about it, those children must be at school by now.

　　想想吧，那些孩子現(xiàn)在一定在學(xué)校了。