VOA慢速英语:Past Unreal Conditionals

短语讲解：

1. Past unreal conditionals are often used to express wishes about the past.

be used to 习惯于，适用于
例句：A stopwatch is used to obtain the optimum procedure.
秋表用来控制最佳工作进程。

2. A conditional sentence can start with the if clause, or the result clause.

start with 以…开始
例句：Here is a copy of all the things we need to start with.
这是我们一开始就需要的所有东西的清单。

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：Even now when I think about it I feel pain in my heart.
就是现在想起来我心里都感到难受。