VOA慢速英语:Everyday Grammar: Double Negatives - Can’t Get None?

短语讲解：

1. In this week’s episode of Everyday Grammar, we’re going to talk about two common types of double negatives.

talk about 谈论
例句：He went on to talk about his accident.
他接着谈到了他的意外事故。

2. Time is not unlimited,” the negative “not” and the negative prefix “un” cancel each other out.

each other 相互
例句：Do you often help each other with your lessons?
你们经常互相帮助复习功课吗？

3. In fact, some of the richness of the English language comes from ignoring the rules.

in fact 事实上
例句：They were in fact casual.
事实上，他们确实不修边幅。