英语短文改错In all our life we can't live without friendship just like we 2._______

问题描述:

英语短文改错In all our life we can't live without friendship just like we 2._______
In all our lives we can’t live without friendship just like we 2._______
  can’t live without air and water.
为什么改like为 as?
能改just为only吗?为什么?

like为介词,后面不加句子,而是加名词(短语),as为连词,连词后加句子.