can’t help doing還是can’t help to do

請看下面一題：

He knows nothing about it, so he can’t help _______ any of your work.

A. doing B. to do

C. being doing D. to be done

【陷阱】容易誤選A，根據(jù) can’t help doing sth 這一結(jié)構(gòu)推出。

【分析】其實答案應(yīng)選B。比較以下結(jié)構(gòu)：

can’t help to do sth = 不能幫助做某事

can’t help doing sth = 禁不住做某事，情不自禁地做某事

又如下面一題，答案也是B(from www.網(wǎng)址未加載)：

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

A cleaning B. to clean

C. cleaned D. being cleaned

再請看以下試題(from www.網(wǎng)址未加載)：

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

A. to persuade B. persuading

C. being persuaded D. be persuaded

此題應(yīng)選C，句中的 can’t help 意為“禁不住”（注意根據(jù)句意用被動形式）。