下面两个英语句子的句型是什么呀It is necessary that you start training a few months before the walk.This will be an experience you will never forget.有这种句型的语法说明当然最好啦~这两个句子是牛津英语八年级下unit6 reading 里面的~
问题描述：
下面两个英语句子的句型是什么呀
It is necessary that you start training a few months before the walk.
This will be an experience you will never forget.
有这种句型的语法说明当然最好啦~
这两个句子是牛津英语八年级下unit6 reading 里面的~
答