can’t help doing还是can’t help to do请看下面一题：He knows nothing about it, so he can’t help _______ any of your work.

A.

doing B.

to doC.

being doing D.

to be done【陷阱】容易误选A，根据 can’t help doing sth 这一结构推出。

【分析】其实答案应选B。

比较以下结构：can’t help to do sth = 不能帮助做某事can’t help doing sth = 禁不住做某事，情不自禁地做某事又如下面一题，答案也是B



She can’t help ____ the house because she’s busy making a cake.

A cleaning B.

to cleanC.

cleaned D.

being cleaned再请看以下试题



While shopping, people sometimes can’t help _____ into buying something they don’t really need.

A.

to persuade B.

persuadingC.

being persuaded D.

be persuaded此题应选C，句中的 can’t help 意为“禁不住”（注意根据句意用被动形式）。

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