She thought I was talking about her daughter, while in fact I was talking about my daughter.
这是卷子上的一个句子,句子能看懂。请问老师 while 前面必须有个逗号吗?查了几个句子都有逗号。谢谢老师。
也可不用逗号的,如下面两句就摘自《牛津高阶英汉双解词典》的 while 词条:
I drink black coffee while he prefers it withcream. 我爱喝清咖啡而他喜欢加奶油的。
English is understood all over the world whileTurkish is spoken by only a few people outside Turkey itself. 英语世界通行,但土耳其语离开本国就很少有人说了。