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