我的孩子不清楚英语“in for to of on with"在句子中的用法，那位高人能帮帮我呀？谢谢！

这些都是常用介词。介词是英语中用法最为复杂的词类之一。在此只能简单地介绍一下。
首先，要记住它们的基本词义，如：
in 在……里，for 为了，to 到、向，of ……的，on 在……上，with 和……一起
其次，介词常用在动词之后，如：
I live with my father and mother. 我和我的父母一起生活。
如果没有具体的动词，那就要用在be动词之后，如：
Your book is on the bed. 你的书在床上。
再者，要记住介词的一些常用搭配，如：
look for 寻找，in the end 最后，listen to 听……，等等。
以上是有关介词的一点最基本的内容，希望对你辅导孩子能有所帮助。

in 在什么什么里面
for 为了什么
to 后常接动词 表示要做什么
on 在什么什么表面上
with 表示一种从属关系

so you are after for preposition ? for the sake of your kid...here you are...

PLACE (in, on, under etc )
Your book is on the table.
We waited in the bus.
The cat sat under the tree.

TIME (in, on, at )
I can meet you at 9 o'clock
I can see you on Sunday.
I was born in 1997.

PURPOSE,QUANTITY (for)
He went to the store for foods.
We bought it for ten cents.

PLACE OR DIRECTION (to. with )
The park is next to the school
He went to the store.
He went with his sister yesterday.
I ate it with a tea spoon.

Measure (of)
Please buy me a piece of cake

There's a lot more ...

in 在...里面
for 为了...
to “朝/向...”常跟在不及物动词后面，如go to...
on 在....上
with 和...一起，如 come with me

建议买一本语法书，有比这更全的介词用法