When did the meeting begin?In about five minutes.单句改错
问题描述：
When did the meeting begin?In about five minutes.单句改错
We're going on atrip if it won't rain tomorrow.单句改错
答
1.When will the meeting begin?In about five minutes.
In短语表示将来的时间,所以要用一般将来时.
2.We're going on atrip if it doesn"t rain tomorrow.
if连接条件状语从句,遵循“主将从现”原则.