The naughty boy had wanted to play football with the kids in the street, but his

题型：不详难度：来源：

The naughty boy had wanted to play football with the kids in the street, but his parents warned him ____.

A．not to

B．not to do

C．to do

D．of doing

答案

A

解析

试题分析：考查不定式的省略：句意：调皮的男孩想和街上的孩子踢足球，但是他的父母警告他不要（踢球）。这是省略句，完整的是his parents warned him not to play football。不定式的动作如果前面出现了，可以省略动词do，但是to要保留。选A。
点评：为避免重复，有时可用不定式符号to来代替整个动词不定式(短语)。但是如果动词是be动词或have，就不能省略。