海天考研网

　　84、　be busy with sth. 忙于某事

　　be busy doing sth. 忙于做某事

　　真题重现：

　　Alone in a deserted house, he was so busy with his research work that he felt anything but lonely.

　　他自己呆在一个废弃的屋子里忙于自己的研究工作，以至于一点都不感觉到孤独。(1990词汇)

　　造句：

　　He is busy with proving up a coal deposit.

　　他正忙于勘探煤层。

　　He is too Busy doing God knows what.

　　他太忙，不知道究竟在忙些什么。

　　85、last but one 倒数第二.

　　造句：

　　The problem is the last But one.

　　这是倒数第二个问题。