分类：教育/科学-外语学习
问题：翻译一个句子Dad'sfaceturneddecidedlyle 
Dad's face turn decidedly less red before he could bring out a “yes”。请问，before在這裏的用法和意思是什麼？
回答：   Dad's face turned decidedly less red before he could bring out a “yes”.  
   在爸爸还不能说出“是”之前，他的脸明显地变得苍白了。
   before在这里是一个连接词，意思是“在……之前”。