关于“动词-ing形式”的用法,本报语法栏目已作了大量的讲解。本文试图用“问题解答”和“判断正误”两种方式,从另外的角度来分析其用法。【问题解答】【问】No reference books are to be taken out of the reading room without permission. She walked slowly in order not to wake up the sleeping baby. 在这两句话中,reading 和sleeping 都分别作了room和baby的定语,但总感觉它们有些不同,请讲一下之间的区别好吗?

5. 作定语：

The meeting being held now is of great importance to our daily life.

Nothing could be heard but the noise of machines being repaired.

【判断正误】

黑体部分是“动词-ing的否定形式”，请给下列句子作个诊断。

A. Tom felt sorry for not inviting Mary to his birthday party. (正确)

B. Tom felt sorry for inviting not Mary to his birthday party. (错误)

A. Tom felt sorry for his not inviting Mary to his birthday party. (正确)

B. Tom felt sorry for not his inviting Mary to his birthday party. (错误)

A. Tom felt sorry for not having invited Mary to his birthday party. (正确)

B. Tom felt sorry for having not invited Mary to his birthday party. (错误)

A. Not being invited to Tom’s birthday party made Mary very sad. (正确)

B. Being not invited to Tom’s birthday party made Mary very sad. (错误)

A. Her not being invited to Tom’s birthday party made Mary very sad. (正确)

B. Not her being invited to Tom’s birthday party made Mary very sad. (错误)

A. Not having been invited to Tom’s birthday party, Mary felt very sad. (正确)

B. Having not been invited to Tom’s birthday party, Mary felt very sad. (错误)

【分析】诊断已经给出，对错一目了然。A句之所以正确，B句之所以错误，是因为not的位置必须放在：动词-ing之前，物主代词之后。否则就是错误的，毫无例外。不信? 请你对照每个句子看看。

（山东省潍坊第七中学 刘永科）