VOA慢速英语:Virginia Leaves Union, Lincoln Puts Maryland Under Military Rule

短语讲解：

1. In April 1861, years of disputes between North and South finally burst into civil war.

burst into 匆匆进入（某处）; 突然开始（某事）
例句：Hearing the joke, we burst into spontaneous laughter. 
听到笑话,我们不由自主地大笑起来。 

2. They set up a government they called the Confederate States of America.

set up 建立; 准备
例句：They set up many branches throughout the country. 
他们在全国建立好多分公司。 

3. But he agreed to command the Confederate forces of Virginia.

agree to 同意， 赞成
例句：I agree to go with him.
我同意和他一起去。

4. President Lincoln became increasingly worried about Virginia’s forces.

worry about 担忧， 烦恼
例句：Don't worry about the results.
不要担心结果。

5. To get to Washington, Union forces from the North had to pass through the state of Maryland.

pass through 经过;  通过
例句：Attendees must pass through airport-like security.
参加者必须通过机场式的安检。