at least 请 语法好的朋友讲解

一、所有的介词短语都是副词词组,有的表示时间（如：at night【夜间】,during the day【白天】）,有的表示处所（at home【在家】,up the river【在狱中】）,有的表示方式（by the way【顺便】,by means of【依靠】）,有的表示条件（如：with one’s help【在某人帮助下】,in that case【如果是那样的话】）,有的表示程度（如：in a way【有点】,in large【大规模地】）.当然还可以表示原因、结果、目的、比较等.

二、副词性的介词短语可以作表语（如：He is at home）、定语（如：some students from this school【来自这所学校的几个学生】）或状语.作状语时,一般用来说明行为或状态产生的时间、原因、条件、处所、方式、程度、目的、结果.

三、at least就是一种表示程度的介词短语,用来修饰动词说明其产生时的最小程度.

四、多数语言中的状语位置都很灵活,根据说话人对它的强调态度,可以出现在句首、句中或句末.见下面的1—5：
————————————————————————————————————
1. At least the club keeps the young people off the streets. 起码俱乐部能使年轻人不在街上乱逛了.
——at least 修饰keeps,说明“一直保持的程度”?

2. He smoked at least half a packet of cigarettes a day. 他每天至少抽半包烟.
—— at least修饰动词 smoked 吗,说明“吸烟的程度”

3. I reckon there are at least fifty people in the room. 我估计房间里至少有五十个人.
——at least 修饰there are,说明“存在的程度”

4. His picture is worth at least twenty pounds. 这张图片至少值二十英镑.
—— at least 修饰is worth,说明“价值的程度”

5. You should let me know at least. 你最起码应该让我知道
——at least 修饰know,说明“知道的程度”

6. 从这里坐火车去北京你至少需要5个小时

以下句子都没有错.

A）You need at least 5 hours from here to Beijing by train.（也可以是to go to Beijing from here ——介词短语to …是目的状语,from …是处所状语）
B）It takes you at least 5 hours to go to Beijing from here by train.

7. 关注某人/某事

* pay attention to sb/sth.
* be concerned about sb/sth.
* with an eye to sb/sth.
【我一直在默默关注你】

I have been paying attention to you.
I’m concerned about you all the time.
I’m always with an eye to you.

【我不太关注网上的新闻】
I don’t very much pay attention to the news on the web.
I’m not much concerned about the news on the web.
I’m not very much with any eye to the news on the web.

8. a seven-day holiday ,和（a) seven days' holiday? 意思是否等同? 后一个,加不加a 不很确定.

a seven-day holiday 连续的七天的假期
seven days' holiday 总共七天的假期,包括累计的和连续的

“我一个月有8天假期”最好变通翻译为——
I have seven days altogether on leave in a month（累计休息8天）