Tom wanted to play football with his friends in the street ,but his father told him _ ...

题目

Tom wanted to play football with his friends in the street ,but his father told him _ ...
Tom wanted to play football with his friends in the street ,but his father told him _ A.not to B.not to do 正确答案是A,想请高手详解为什么是A而不是B,:-)

答案

动词不定式的省略.常只保留动词不定式符号to.若后是be,have时,be 和 have不能省.
B项应为 not to do it .it不能省略.