Question

There are many benefits to eating food 请问这句话里to eating 的具体用法

Answer 1

benefit to sth / doing sth 的意思是“对。。。的好处”，其中benefit是名词，to 是介词，介词后自然应该用名词或动名词。你的例子中的eating 就是动名词。再举一个benefit to 后接名词的例子：
The new factory will be a great benefit to the town.

追问

there are many people buying the tickets, 不是有doing 的用法吗，这里为什么加to呢

追答

benefit 的意思是“好处”，“对。。。的好处”必须说 benefit to sth / doing sth ， 也就是说benefit后必须用to，这是benefit这一词语的用法所要求的。而在there are many people buying the tickets 中，people 是 buying the tickets 的逻辑主语， people buying the tickets 等于people who are buying the tickets,所以people后不可能有to。

Answer 2

to eating foods 是补语。补充说明benefits.to 是介词，后跟动名词

Answer 3

你好！
to
eating
foods
是补语。补充说明benefits.to
是介词，后跟动名词
如果对你有帮助，望采纳。

Answer 4

不定式作定语