We are going to have a picnic when we aer going to be free next Friday找出这句话的错误

问题描述:

We are going to have a picnic when we aer going to be free next Friday找出这句话的错误

改为 We are going to have a picnic when we are free next Friday。
主句用将来时的时候 从句要用一般现在时表将来。

将其改为:We are going to have a picnic when we are free next Friday,在时间状语从句里,用“一般现在时”代替'将来时",这是英语语法规定的