例10：I can't add two and two, let alone do fractions.
译文：我连2加2都不会，更别说做分数题了。
注意：美国成语词典觉得let alone只可以用于追加的否定。但，有些词典觉得，该短语也可以引导追加的一定。比如：There were five people in the car, let alone the luggage and the two dogs.
9.nothing else than 完全是，实在是
例1: What the man said was nothing else than nonsense.
译文：那人讲的话完全是一派胡言。
例2: Your success was due to nothing else than your own diligence.
译文：你的成功完全是因为你一个人的勤奋。
10.It is not that...but that... 这不是说，而是说
例1: It is not that the scales in the one case, and the balance in the other, differ in the principles of their construction or manner of working; but that the latter is much finer apparatus1 and of course much more accurate in its measurement than the former.
译文：这并非说在一种状况下所用的磅秤和另一种状况下所用的天平在架构原理上或工作方法上存在差别，而是说与前者相比，后者是一种更精密得多的装置，因而在计量上势必愈加准确。
11.can not...too... 再也不过分
例1: We cannot be too careful of health. 大家无论怎么样注意健康也不为过。
例2: You cannot be too careful when you drive a car. 你开车时再小心也不过分。
例3: We can not be too faithful to our duties. 大家需要尽力忠于职守。
12.other...than... 或other than... 不同于，非；除去
例l: Plants which refine crude ores are often located in countries other than those in which the crude ores are mined.
译文：提炼矿石的厂房一般不是设在采矿石的国家而设在其它国家。
例2: Reactions other than the desired one often occur when reactants are brought together.
译文：当这类反应物放在一块时，常发生不期望有些一些反应。
例3: All parts of the house other than the windows were in good condition.
译文：除去窗以外，屋子的其它部分都完好无损。
13. ... the last + n. + 不定式或定语从句：意为最不可能的
例1: She would be the last person to go along with the scheme.
译文：她或许会是最不认可这项计划的人。
例2: That's the last thing I'd expect you to do.
译文：那是我最不期望你做的事情。
14.It is asserted that...有人断言...
It is believed that... 据觉得....，大家相信....
It is considered that...有人觉得...
It is reported that...据报道...
It is said that...据了解....
It is supposed that...据推断...
It is told that...据传...
It appears that看来好像...，仿佛...
It is well known that...大家都知道...
It is estimated that...据估计...
It was pointed2 out that...有人指出...
It is generally accepted that...大家一般觉得...，一般觉得...，大伙公认...
It is alleged3 that...大家断言...
It is claimed that...有人倡导...，大家需要...
It cannot be denied that...不能否认
It has been found that...实践证明
It is predicted that...据估计...，据预测...
It is suggested that...有人建议...
15.It goes without saying that... 不言而喻，
例：It goes without saying that in order to speak good English, we must first of all learn good pronunciation.
译文：不言而喻，为了讲好英语，第一需要学好发音。
16.It is common knowledge that 大家都知道，
例：It is common knowledge now that Chinese people are very intelligent.
译文：大家都知道，中国人和非常聪明。
17.It occurs to sb. that 想起
例1: It occurred to me suddenly that I had met him somewhere.
译文：我忽然想起在什么地方见过他。
例2: It occurred to me that she was jealous of me.
译文：我忽然发觉她嫉妒我。
