词形变化( Word Form )应试技巧
1.熟练掌握动词词形变化规律。注意:动词形式既包括谓语动词的各种形式,如时态、语态及语气(直陈、虚拟)等,虚拟语气为重点,几年来的考题中都有这方面内容;也包括非谓语动词的各种形式。所以做动词的词形变化时,首先要搞清楚它在句中是谓语动词还是非谓语动词,然后再作相应的变化。
2.认真学好并熟悉课文。本题所选用的句子是根据教材中出现的句子编写的,其中多数来自课文,所以熟悉教材十分重要。
3.认真钻研相关的语法讲解。主要指谓语动词、非谓语动词、形容词、副词比较等级、情态动词、虚拟语气\形容词比较级、最高级,等部分。
动词:动词是考试的重点。主要包括:动词的时态、语态、语气和非谓语动词。
1)动词的时态:重点是动词的过去时、完成时。
So far, Irving ______(live) in New York City for ten years. has lived
Many a writer of newspaper articles_______(trun) to writing novels during the past decade. has turned
Some people think relations between people _______(deteriorate) so much that understanding and friendship are almost impossible . have deteriorated
Nearly a week passed before the girl was able to explain what _______(happen) to her.
had happened
In the past two decades, research _____(expand) our knowledge about sleep and dreams . has expanded
2)动词的语态:主要掌握各个时态的被动式。
The nations that _______actively ________(involve) in earthquake prediction programs include Japan, Russia, and the United States. are involved
There __________(estimate) to be more than 20,000 overseas domestic servants working in Brtain in 1995. were estimated
3)动词的语气:
A.掌握非真实条件句中,谓语动词在主句和条件句中的虚拟语气形式。
If you had come earlier, you ______ (not miss) the first act of the play.
would not have missed
If it hadn‘t been for your help, we _____(be) in real trouble.
would have been
B.在表示建议、命令、要求以及表示“重要性”和“紧迫性”等含义的主语从句、宾语从句、表语从句和同位语从句中,谓语动词常用虚拟语气,由“动词原形”或“should + 动词原形”构成。 should 常常省略
I would recommend that you _______(think) about doing something similar for yourself. (should) think
It was imperative that students ______(finish) their papers before July 1st.
(should) finish
C.动词wish 、would rather (sooner)、if only、as if 后的虚拟语气。
I would rather he _____(buy) the house next year.
bought ( 表示从句中动作尚未发生)
She treats me as if I ______ (be) a stranger. were
The manager told us to be friendly to the visitors as if we _____( meet) them before.
had met
If only we ______(have) a phone! I‘m tired of waiting outside the public phone box.
D.in case , for fear that , lest 等词后从句的谓语动词为(should) + 原形。
He took his umbrella with him lest it _______ (rain.)
(should) rain
E.在It is (high) time that 从句中谓语动词一般用过去时动词。
It‘s high time that we _______(take) firm measures to protect our environment. took
F.时间错综条件句,动词的形式要根据表示的时间调整。
如果我们早动身,现在就不会在雨中走了。
If we had set out earlier,we wouldn‘t be walking in the rain.
(从句中动作发生在过去,主句中动作发生在现在。)
4)动词的非谓语动词形式:
A.动词不定式:主要考查动词不定式作定语、宾语、宾语或主语补足语等的用法。还要注意动词不定式的被动式与完成式。
不定式作定语:If there is no choice, there is no decision ______(make) to be made
不定式作宾语: Robots , already taking over human tasks in the automotive field, are beginning ________(see) . to be seen
不定式作宾补 I notice him _______( leave ) the classroom. leave (可省略to)
不定式作主补:They were often compelled ______(work) twelve or fourteen hours a day.
to work( 不可省略to)
We make them (to) work day and night. 不定式作宾语补语,在有些动词后可以省略TO
They are made to work day and night. 不定式作主语补语时,不可省略TO
B.分词:主要考查分词作定语、状语、宾语补足语的用法。注意现在分词与过去分词的区别。 另外,还有现在分词的被动式与完成式的形式。
分词作定语:Anyone ______(want) to understand the industry of the future will have to know about robotics. wanting
As research techniques become more advanced, the number of animals _____(use) in experiments may decrease. used
分词作状语: When ______(present) with a common case, sales managers tend to see sales problems and production managers see production problems. presented
________ (tell) that some guests were coming , she shopped all morning in the supermarket. Having been told
Her body, with hands and feet _______(bind) , was discovered by a traveler early in the morning. bound
分词做宾补: They may have their passports ______(remove) , making leaving or “escaping” actually impossible. removed
动名词作宾语:If you cannot understand , ask: “ Would you mind ______(rephrase) the question , please ?” rephrasing
If we don‘t start out now, we must risk ______(miss) the train.
missing
形容词副词:
The more time you waste, the _____(easy) it is to continue wasting time.easier
As Jane was the _____(old) , she looked after the other children in the family. eldest
词性转换:
The explorers were puzzled over what to do next because they were in a _____(trick)situation .
trick是名词或动词,应把它变为形容词tricky
These electric appliances are all similar in construction but each one is _____(specialize) in its function.
specialize 是动词,应把它变为形容词 specific或 special