2016-06-15
xredued04
14、在有些词组中，有冠词和无冠词意思不同，请注意区别。
In front of(在…前面)
in the front of (在…范围内的前面)
in hospital(住院)
in the hospital(在医院里)
15、a number of……许多，句中的动词用复数。
The number of……的数量，句中的动词用单数，与the population用法相同。
如：
The number of workers in this factory is about two hundred.
A number of students were present the meeting.