be busy doing/be busy in doing/be busy with doing

问题描述

be busy doing sth 是英语中的常用句式。如：

They were busy getting the harvest in. 他们正忙着收获。

The women were busy preparing the wedding feast. 女人们正忙着准备婚宴。

They were busy laying the drains for the new houses. 他们正忙着给新房铺设下水道。

请问如果要在 doing sth 前面加一个介词，是 in 还是 with？凭感觉好像 be busy in doing sth 和 be busy with doing sth 都很顺口。

老师答疑

黎老师：

根据英语惯用法，busy doing sth. , busy with doing sth. 和 busy in doing sth. 都是正确的。请看下面的实例：

1. Two of them were busy making artificial flowers. (Davies) 他们之中有两个人忙着做假花。 

2. We are busy (in) preparing for the examination.  我们正忙着准备考试。（《英语惯用法大词典》）

3. I'm busy (with) getting the house redecorated. ( CGEL)我正忙着重新装饰房屋。

（以上内容摘自赵振才教授编著的《英语常见问题解答大词典》增订版）

李老师：

谢谢黎老师！