The child has lots of toy to play with.为什么要加with`还有I have enough money to buy the book with.为什么加with`而She has something to say.后面可以不加介词 这是为什么?谁能告诉我

问题描述:

The child has lots of toy to play with.为什么要加with`
还有I have enough money to buy the book with.为什么加with`
而She has something to say.后面可以不加介词 这是为什么?谁能告诉我

play是不及物动词,后面不可以直接接名词
play with 是一个词组,因为这个句子的结构二放到了后面.故不能省略with
第二句可以不用with
第三句中say是及物动词,故不用加介词