2015年卫生类职称英语考试语法之否定

全部否定和部分否定

eg.All the birds can not fly.

Not all the birds can fly.不是所有的鸟都会飞。

1.部分否定

eg.All the birds can not fly.并非所有的鸟都会飞。

None of the birds can fly.所有的鸟都不会飞。

代词或副词如all,both,every,everybody,every day,everyone,everything,everywhere等与not搭配使用时，表示部分否定，意思为“并非都是"等。

eg.All is not gold that glitters.发光的并非都是金子。= Not all is gold that glitters.

2.全部否定

英语中常用not,none,nobody,nothing,nowhere,neither,never等表示全部否定的概念。

eg.Nothing in the world is difficult for one who sets his mind to it.世上无难事，只怕有心人。

eg.W: Daddy,I've decided to give up science and go to business school.

M: Well,it is your choice as long as pay your own way,but I should warn you that not everyone with a business degree will make a successful manager.

Q: What do we learn from the conversation?

A.The man doesn't have money for his daughter's graduate studies.

B.The man doesn't think his daughter will get a business degree.

C.The man insists that his daughter should pursue her studies in science.

D.The man advises his daughter to think carefully before making her decision.

3.双重否定

在阅读当中出现的频率更高一些。在一个句子中出现两个否定词：not,never,hardly,scarcely,rarely,seldom,few,little,none等，双重否定表示肯定的概念。

eg.No one can command others who cannot command himself.

A perpson can command others who command himself.正人先正己。

eg.Without the ability to think critically,to defend their ideas and understand the ideas of others,they can not fully participate in our democracy.

如果没有能力进行批判性思维，维护自己的观点，并理解他人的观点，他们就不能充分的参与我们的民主政治中来。

4.形式否定，意义肯定

eg.A man can never have too many ties.一个男人可以拥有很多的领带。

A woman can never have too many dresses.一个女人拥有再多的衣服也不为过。

eg.We can hardly praise his achievement too much.对他的成就我们无论怎样赞扬也不过分。

eg.A mother can never be patient enough with her child.一个母亲对她的孩子再怎么耐心也不为过。

A teacher can never be strict enough with his students.一个老师对他的学生再怎么严格也不为过。

这种形式主要运用于阅读当中。