I don't have a friend to practice with,后面加的这个with是什么结构,

I don't have a friend to practice with,后面加的这个with是什么结构,
I don't have a friend to practice with,后面加的这个with是什么结构,

I don't have a friend to practice with,后面加的这个with是什么结构,
句意：我没有和我练习的朋友.
a friend to practice with = to pracitce with a friend
即：practice与a friend之间的关系为：
practice (sth.) with a friend 和一个朋友练习..
当practice动词不定式做后置定语时,表示两者关系的介词with也不能省略掉.

I don't have a friend whom I can prictice with.
因为practice后边的宾语不能是friend，句子的意思是和朋友一起练习，因此用practice with 后边跟介词宾语friend。

不定式作目的状语
practice with是固定短语搭配咯