Can a man without arms still play the piano? You might not think so _________ you see Liu Wei play.
答案是until
想问:unless,before可以吗?
谢谢!
Can a man without arms still play the piano? You might not think so _________ you see Liu Wei play.
答案是until
想问:unless,before可以吗?
谢谢!
【答】如果主句是否定句,unless 和 before 都可以引导时间状语从句,意思基本相同。所以,你的题目答案填 unless 或者 before 都正确。