发布时间 : 星期日 文章英语四级热点语法更新完毕开始阅读
四级热点语法
He can’t have finished the work so soon.
He may not have achieved all his aims. But his effort is praise-
worthy.
We ought to have give you more help.
c) 情态动词间或也可以和一个动词的完成进行式构成谓语,表示”应当一直在?”, “想必一直在?”这类意思:
They are sweating all over. They must have been working in the fields.
They may have been discussing the problem this morning.
You should have been waiting for us. Why haven’t you?
She couldn’t have been swimming all day.
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常考知识点: 1 can 的理解和翻译
You cannot be careful when you drive a car. A. very B. too C. so D. enough
你开车时越小心越好。（97.6-32, B对）
can有很多含义，它可以用来表示可能性（possibility）。该句相当于It's impossible that you are too careful when you drive a car. 即：“你开车时太小心这种情况是不可能的”。句型“can not/never/hardly...too＋...”表达强烈的肯定，常常译成“越...越好”，“再...也不过分”。例如：
We can not stress the importance of the theory too much.
这一理论的重要性，怎样强调都不过分。
The important role people played in history can never berated too much.
人民在历史上所起的作用，无论怎样评价都不会过高。
A book can hardly last too long.
好书定能永远流传下去。
The effect of science and technology on social progress can never be estimated enough.
科学技术对社会进步所产生的影响，无论怎样评价都不过分。
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四级热点语法
2 “情态动词＋完成式”的用法
You ______ her in her office last Friday; she's been out often for two weeks. A）needn't have seen B）must have seen C）might have seen D）can't have seen
你不可能在上星期五看见她在办公室，她离开镇子已经两星期了。(96.1-23,D对)
The room is in a terrible mess; it ______ cleaned. A）can't have been B）shouldn't have been C）mustn't have been D）wouldn't have been 房间乱极了，不可能有人打扫过。(96.6-31,A对）
It was very kind of you to do the washing-up, but you ______ it. A）mustn't have done B）wouldn't have done C）mightn't have done D）didn't have to do
谢谢你把东西洗了，但是你本来没有必要洗的。(98.6-44,D对。...but you didn't have to do it 相当于but you needn't have done it )
Research findings show we spend about two hours dreaming every night , no matter what we ______ during the day.
A）should have done B）would have done C）may have done D）must have done
研究结果表明：不管我们白天做了什么，我们每晚大约有两个小时在做梦。(99.1-54,C对）
3 may / might as well 表示“因为没有更好、更有趣或更有用的事可做，就做某事”
If you don't like to swim, you ____ stay at home. A) should as well B) may as well C) as well D) would as well
如果你不喜欢游泳，也可以留在家嘛。(95.1-60, B对。)
一致平衡 主谓一致
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1． 主谓一致（与插入语无关）
1>主谓的分隔原则：主谓之间可以用定语从句或者省略的定语从句分隔。 2>定语从句中的主谓一致： 3>随前一致：
n. + together with n2 as well as including
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四级热点语法
along with with / of
accompanied with / by
4>就近原则：n1 or n2 +v（就近原则） either n1 or n2 5>可数n1 and 可数n2+v(pl) 不可数n1 and 不可数n2+v(pl)
例外：war and peace is? war and peace是一个整体
但是如果主语表示的是同一个概念，同一人，同一事的时候，谓语动词用单数，这种结构的特征是and连接的两个词只有一个冠词。
The iron and steel industry is very important to our country. The head master and mathematical teacher is coming.
The head master and the mathematical teacher are coming. 类似的还有：law and order bread and butter black and white
To love and to be loved is … A lawyer and a teacher are… A lawyer and teacher is …
6>随后原则：not A but B / not only A but also B+v.(与B一致)
7>百分比结构：most , half , rest , some , majority , one+persent of+n1+v.（由n1决定）
8>倒装结构的主谓一致：
a）There be +n 由名词决定动词
b）Among , between等介词位于句首引起倒装结构： Among / Between ?+系动词+n. （由名词决定动词） 9>The+adj的主谓一致： a）当表示“一类人”， b）当表示某一抽象概念时
The good is always attractive. 10 To do/doing/主从+vs *More than one+n many a +n.
a day or two
平衡结构
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注意语法功能相同的两个语言结构由适当的连词连接：
Realizing that he hadn't enough money and ______ to borrow from his father, he decided to sell his watch.
A）not wanted B）not to want C）not wanting D）wanting not
他意识到自己钱不够，又不想向父亲借，于是就决定把表卖了。(95.1-67,C对。wanting与realizing并列，wanting的否定是not wanting,故选C)
Having no money but ____ to know, he simply said he would go without dinner. A) not to want anyone B) wanted no one C) not wanting anyone D) to want on one 他没有足够的钱，又不想让别人知道，于是就说要走了，不吃饭了。
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四级热点语法
(93.6-47, C对)
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