think的過去式和過去分詞形式

　　Whoever thought up that joke?

　　究竟是誰想出那個笑話的？

　　The thought seemed to amuse him.

　　這個想法好像讓他覺得好笑。

　　He sighed deeply at the thought.

　　想到這里，他深深嘆了口氣。