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CNN news 2011-01-02 加文本

2011-01-02来源:和谐英语
1.Behind the scenes, the New York City's Police Department is gearing up for a massive security operation.

gear up使做好行动准备

例句:The Department is gearing up for increased intake of students.
      这个系正在为扩大招生做好准备。

      The party is all geared up for the forthcoming election campaign.
      该党为即将来临的竞选活动已完全做好了准备。

2.New York City Police Commissioner Ray Kelly says the department updates its plan each year to secure crowds who must be within barricades and go through metal detectors.

must用法

表示“必须”、“一定要”

(1) 可用于肯定句、否定句或疑问句;用于否定句时,mustn’t 的意思是“一定不要”、“不能”,而不是“不必”。如:

You must finish it today. 你一定要在今天完成它。

You must see the doctor. 你一定要看医生。

Must you go so soon? 你一定得这么早就走吗?

We mustn’t think only of ourselves. 我们可不能只考虑自己。

(2) 主要表示现在或将来,但有时(如在间接引语中)也可表过去(=had to)。如:

She asked if she must (had to) leave. 她问她是否一定要离开。

(3) 对于must 开头一般疑问句,若要作否定回答,可用needn’t,不用mustn’t。如:

"Must I come over tonight?" "No, you needn’t." “我今晚必须过来吗?”“不必。”

(4) 其后可接被动结构或进行形式。如:

Something must be done to stop it. 必须采取措施来阻止它。

I think I must be going. 我想我得走了。