The boy wanted to ride his bicycle in the street,but his mother told him_______.为什么只能填not to而不是not t

题目

The boy wanted to ride his bicycle in the street,but his mother told him_______.为什么只能填not to而不是not to do或是not to do it

答案

这是省略句,只能填not to是约定俗陈,没有道理的,外国人就这么说.
就像许多外国人爱问你们中国人问什么说是一棵树,而不是一个树的道理.
但是当后面是be/have been时,be 就不能省了
例如：Her mother wants him to be a teacher,but he doesn‘t want to be.
这里be就不能省略了.
您懂了吗?