句子里介词后面该不该接不定式

请看下面这道题, 这个介词后该不定式还是动名词?

The only way that he thought of __________ enough money was to sell his car.

A. get B. getting C. to get D. got

此题应选C。容易误选B。误认为选getting用作介词 of 的宾语。

假若选 B，那么 that he thought of getting enough money 显然是一个修饰 the only way的定语从句，由于该定语从句前使用了关系代词(that)，按照定语从句的规则，关系代词 that一定要在定语从句用作主语或宾语。但是事实上，这个定语从句并不缺少主语(因为已有主语he)，也不缺宾语(因为已有宾语 getting enough money)，可见句子矛盾。

此题应选C。句子分析：that he thought of是修饰 the only way 的定语从句，而其后的不定式短语 to get enough money 也是修饰 the only way 的定语。全句意为：他所想到的能弄到足够钱的唯一办法是把他的汽车卖掉。

以下各题均不能按常规思维理解，请你做一做。如：

1. Every minute should be made full use of _________ our lessons.

A. to studyB. studyC. studyingD. studied

2. I don’t know whether the letter we are looking forward to _________.

A. cameB. has comeC. come D. coming

3. It’s the very work that I must finish _________ her.

A. to help B. helpC. helpingD. helped

答案：1. A 2. B 3. A