We can know from the book the air is very fresh 这句话有没有问题

问题描述:

We can know from the book the air is very fresh 这句话有没有问题
如果要改成
我们可以从书中知道以前的空气是很新鲜的怎么改

没有的,可以在book后加上that,但这个是可以省略的.from the book 的位置可以放句首或者句末.句子意思不变:我们可以从书中得知空气是很新鲜的. We can know from the book that in the past the air there was very ...