高中英语必修2北师大版Unit4cyberspace知识点总结.docx
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1、高中英语必修2 (北师大版)Unit 4 cyberspace学问点总结一学问点总结1.词义辨析:1.1. likely/possible/probable三者都可以表示“可能的”,possible可能性最小,probable可能性最大,但用法不同。单词主语用法likely人/物/itsb. be likely to do sth.It is likely + that从句possibleitIt is possible (for sb.) to do sth.It is possible +that从句probableitIt is probable +that 从句因此,“我们学英语时可能
2、会犯错”可以表述为:We are likely to make mistakes when learning English.=It is likely/possible/probable that we make mistakes when learning English.=It is possible for us to make mistakes when learning English.1.2. affect/effect/influence 这些动词均含“影响”之意,但在词性和意义上有差异。单词词性意义affectvt. 主要指一时的影响。effectn.(可数或不行数)主要指一
3、时的影响,have an effect on 意为“对有影响”。influencevt.&n.(通常不行数,但有时可连用不定冠词)主要指对行为、性格、观点等产生间接的或潜移默化的影响,have an influence on 意为“对有影响”。Both diet and exercise affect blood pressure.饮食和运动都对血压有影响。What you read has an influence on your thinking.你读的东西对你的思想有影响。1.3. as well as/as well 二者都表示“也”,但在词性上有差异。 短语含义词性as well a
4、s“也”,“不仅而且”连词as well“也”副词,大致相当于also 或 tooShe is my friend as well as my doctor.他不仅是我的医生,也是我的挚友。He can speak Chinese as well.他也会说中文。1.4. be known for/be known as/be known to 三者的含义不同,详细区分如下: 短语含义介词后的搭配be known as 作为而知名as后接表示主语身份的词be known for因而知名for后接表示特征、品质之类的词be known to为所知的to后接表示人的名词或代词George is kn
5、own as a successful banker.乔治作为胜利的银行家而知名。Guilin is known for its beautiful scenery.桂林因风景美丽而著名。She is known to everyone in the college.他在学院里人人皆知。2.核心词汇:2.1. average:adj.平均的,一般的 n. 平均数 on average:平均,平均来说over/below average:高于/低于平均值How long do you spend on-line on average each time?你每次平均上网是多少?Her brothe
6、r is above average in his reading ability.他的阅读实力在平均程度以上。2.2. focus on sth.:集中留意力在某事 The noise made it hard for me to focus on work.噪音让我无法集中留意力工作。2.3. in chaos:混乱不堪 After the failure of the electricity supplies, the city was in chaos.电力供给中断,城市陷于混乱之中。2.4. fancy doing sth.:想做某事,喜爱做某事 I dont fancy going
7、 home alone at night.我不喜爱晚上一个人回家。2.5. be located +介词:坐落于 The new college will be located in the suburbs. 这所新建的学院将设在郊区.Their factory is located at the foot of the mountain. 他们的工厂坐落在山脚下。2.6. do harm to sb./sth.:对有害 Excessive drinking did harm to his health.过量饮酒损害了他的安康。2.7. as if:似乎 as if=as though,可在l
8、ook, seem 等系动词后引导表语从句。He looked as if / though he was ill.他看起来似乎生病了。as if 可引导方式状语从句。I remember the whole thing as if / though it happened yesterday.我记得整个事情,就似乎它是发生在昨天一样。2.8. touch 词组 get in touch with sb.:及某人获得联络keep/stay in touch with sb. :及某人保持联络lose touch with sb. :及某人失去联络Do write to me as often
9、as you can. I dont want to lose touch with you.多多写信给我,我不盼望及你失去联络。2.9. be up to be up to sth:做,从事于,胜任John was dismissed, because he was not up to the task.约翰被辞退了,因为他不胜任这份工作。be up to sb. :由某人确定Its up to you to decide where to go.去哪儿由你确定。2.10. in the flesh:本人 I have corresponded with him for some years
10、, but I have never met him in the flesh.我已和他通信联络好几年了,但始终未及他本人见过面。3.一词多义:3.1. view n. 风光;观点 vt. 观看;对待 In your view, who is right for the job?在你看来,谁合适这份工作?(in ones view:在看来)We can view the problem in many ways.(view:对待)我们可以从多方面来考虑这些问题。3.2. hang on 1.( 用语)别挂断Hang on a minute while I look it up. 别挂断,我查一
11、下。2. (面对困难或阻力)坚持不懈,不泄气Its hard work but if you hang on youll succeed in the end. 这是件困难的工作,但如你坚持不渝,最终是能胜利的。4.阅读必备词汇 : concept n. 观念;概念 chart n. 图;图表 artificial adj. 虚假的;人造的;人为的climate n.气候global adj. 全球的global warming 全球变暖virtual adj.(通过计算机软件)模拟的,虚拟的reality n. 现实;事实virus n. 病毒rapidly adv. 快速地growth n
12、. 增加;成长pessimistic adj. 悲观(主义)的crime n. 罪行;犯罪hacker n. 黑客terrorist n. 恐惧主义者attack n.&vt. 攻击chaos n. 混乱,杂乱,紊乱crash n.&vi.&vt. 撞车;碰撞;倒闭;崩溃optimistic adj. 乐观(主义)的entertainment n. 消遣disappear vi. 不见;消逝obvious adj. 明显的,自不待言的destruction n. 毁坏military adj. 军事的,军用的scientific adj. 科学的nuclear adj. 原子能的project
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