用作表語時,其后�？山咏樵~about, at, in, over , with引起的短語, 這些介詞有時可省略,特別是當其賓語為動名詞時。busy用于too...to結構時可接動詞不定式。

　　busy既可用作及物動詞,也可用作不及物動詞。用作及物動詞時,一般接oneself作賓語,常常表示“使自己忙于某事”。

　　We have a very busy day ahead of us today.

　　今天迎接我們的將是非常忙碌的一天。

　　She is a busy woman with many calls on her time.

　　她是個大忙人，有很多事等著她去辦。

　　He wouldn't come ─ he said he was too busy.

　　他不愿來，他說他太忙。

　　The line is busy ─ I'll try again later.

　　占線——我過會兒再打。