A:句子构成成分回顾
　　 (一)句子构成
　　句子构成的成分共分为九种：主语，谓语，宾语，表语，定语，状语，补语，同位语和插入语。
　　一、主语：句子的核心主体，通常位于谓语动词之前，表明一个句子是谁或何种情况所发出执行或是承受的。在写作中常做主语的有名词、代词、主语从句、V-ing、To do五种。
　　 1名词：Computersare now being widely used in almost all fields.
　　 2代词：Weare now living in an information-explosion era.
　　 3主语从句：Whether sports stars should earn a high salaryis still discussed heatedly.
　　 4V-ing:Surfing the Internetoffers a new way for people to relax themselves.
　　 5To do:To protect the environmentis everybody’s business.
　　二、谓语：描述或阐述主语的情况，由动词来充当，常位于主语之后。
　　 1表状态用系动词：As I see it, movie stars’earning a high salaryisunfair and unjustified.
　　 2表动作用及物或不及物动词：The Internethas revolutionizedpeople’s way of life. Tastediffers.
　　 3表拥有：人或物时用：have has无生命的东西：there be
　　 Peoplehavedifferent views on this question.
　　 There isno absolute agreement on this question.
　　 4情态动词＋动词原形：
　　 In this way, teacherscan never be replacedby computers.
　　三、宾语：及物动词或介词所指向的对象。在写作中常做宾语的有名词、宾语从句、复合结构、V-ing、To do五种。
　　 1名词作宾语：International tourism promotesthe economic development.
　　 2宾语从句作宾语：Some people holdthat air travel should be restricted.
　　 3复合结构：The advanced medical technology has madeit possible for people to live longer than ever possible before.
　　 4 V-ing: Nobody can avoidbeing influencedby media.
　　 5 To do: Some people wantto work for a big companywhile others chooseto work for a small one.
　　四、表语：接在系动词后，补充说明主语的情况又称为主语补足语。在写作中常做表语的有名词、形容词、V-ing、To do、从句五种。
　　 1名词：The environmental problem isa serious problemin modern society.
　　 2形容词：Time isfleetingand art islong.
　　 3V-ing: The argument isconvincing.
　　 4To do: A possible solution isto set down effective laws.
　　 5从句：One advantage of computers’utilized in education isthat they can enrich the traditional teaching method to a great extent.
　　五、定语：修饰名词或类似于名词的词。一般翻译为“……..的”，表示事物性质或状态，分为前置或后置。在写作中常做定语的有形容词、名词、V-ing、To do、从句五种。
　　 1形容词：Taking part-time jobs exertsprofoundimpacts on one’s future career development.
　　 2名词：Generationgap is now a problem we have to face.

名词做定语(名词修饰名词重要原则：第一个名词一般用单数 以下为雅思写作常用名词修饰名词词组)
　　 1 Information technology
　　 2 Information center
　　 3Credit card
　　 4Generation gap
　　 5Beauty contest
　　 6Communication skills
　　 7Information age
　　 8Knowledge economy
　　 9Peace talks
　　 10Service industry
　　 11Water scarcity
　　 12Survival skills
　　 13Press conference
　　 14Safety standard
　　 15Life insurance
　　 16Weather forecast
　　 17Reception desk
　　 18Coffee break
　　 19Body guard
　　 20 Heart attack
　　 21 Department store