正文

VOA慢速英语:Everyday Grammar: Advanced Conditionals

2015-06-06来源:VOA

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短语讲解：

1. This week, we are going to talk about the past unreal conditional.

talk about 讨论，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. Past unreal conditionals are often used to express wishes about the past.

be used to 习惯于，适用于
例句：Petroleum can be used to produce various chemical products.
石油可用于生产多种化学产品。

3. In the classic American film It's a Wonderful Life, the main character George Bailey is thinking about killing himself.

think about 考虑…; 捉摸…
例句：Do you ever think about your childhood?
你是否回忆过童年的事?

4. Make sure you have mastered the past perfect, the present perfect, and irregular verbs before studying advanced conditionals.

make sure 把事情弄清楚，核实或查明某事物
例句：Please make sure that the door is locked.
请弄准门确实是锁好了。