1.Shall we go for a swim tomorrow.2.This is a wonderful place for a picnic.这两个句子的for是什么意思,什么用法,要是换成to不行吗

问题描述:

1.Shall we go for a swim tomorrow.2.This is a wonderful place for a picnic.这两个句子的for是
什么意思,什么用法,要是换成to不行吗