高中英语必修二第三单元重点

高中英语必修二第三单元重点、难点Unit Three Computers 1、In pairs discuss what they have in common. 同桌讨论一下他们有什么共同之处。

common adj. & n.

（1）共同的，常见的You ’ve made a common mistake again. 你又犯了个常见错误。

（2）共同的；公用的Parks are common property to the city’s people. 城市的公园是这个城市的人的公共财产。

联想扩展：have… in common 有共同之处

My son has nothing in common with me. 我儿子和我没有一点共同之处。

common ground 共同利益 common knowledge 人所共知的事 common sense 常识

易混辨析：common , usual , ordinary , average 普通，通常

common 所有人或事物所共有的，常见的，普通的。“习见习闻”。

usual 由过去的经验可判断为正常或通常，是按照预测发生的。

ordinary 与一般实物的标准、品德、习俗相同，平凡而不特殊，强调平淡无奇。

average 指达到平均水平，不突出。

即时活用：用common , usual , ordinary , general填空。

1、This bird looks ______.

2、Anyone who has ______ sense can’t do it.

3、Lao Li came early as ______.

4、He is of the ______ height. 答案：1、ordinary 2、common 3、usual 4、average

2、I began as a calculating machine in France in 1642. 1642年我在法国诞生时是一台计算机器。

begin as 作为…开始；以…起步

The band began as a group of music lovers. 那个乐队一开始只是一群音乐爱好者。

The political leader began as a carpenter. 那位政治领导人是从一个木匠起步的。

联想扩展：begin at…从…开始 begin with 以…开始 to begin with 首先

3、After I was programmed by an operator who used cards with holes, I could “think” logically and produce an answer quicker than any person.在操作员用穿孔卡为我设计程序之后，我能够进行逻辑“思考”，并且能够

比任何人更快的算出答案。

produce vt. 用法归纳：

（1）生产

That factory produces cars named Bi Yadi. 那个工厂生产比亚迪汽车。

（2）产；出

How many eggs did your hen produce this week 你那只母鸡这个星期产了几个鸡蛋

That century produced many great men. 那个世纪出了许多伟人。

（3）引起；造成

Hard work produces success. 努力工作就能成功。

（4）演出；上演

They produced a new play last week. 上星期他们演了一部新戏。

（5）假装

He produced a smile on face when he saw me. 看到我时他脸上装出微笑。

联想扩展：producer n. 生产者 product n. 产品；产物 production n. 产量 productive adj. 多产的

4、As a result I totally changed my shape. 结果我完全改变了体型。

as a result 结果

As a result I lost my job. 结果我失去了工作。

联想扩展：as a result of.. 由于…的结果

As a result of the snow I came late for school. 由于下雪我上学迟到了。

特别提示：as a result 和as a result of..都用于引导状语从句。as a result 后不跟宾语，后面可以用逗号，也可以不用逗号；而as a result of..后必须跟宾语。

5、I was able to share my knowledge with others through the World Wide Web.我能够通过万维网和其他人分享我的知识。

用法归纳：

（1）分享；分担 Good friends should share both joys and sorrows. 好朋友应该分享快乐，分担痛苦。（2）合用The two economists shared the Nobel Economic Prize this year.两位经济学家共同获得今年的诺贝尔经济学奖。

（3）共同具有 The two brothers share the same taste and interests. 兄弟俩品位相同，兴趣相同。

联想扩展：share还可以作名词。表示①一份东西②一份责任③股份

This is your share, please take it away. 这是你的那份，请拿走。

I have no share in that matter. 我与那件事情没关系。I hold 1000 shares of that company. 我有那个公司

1000股股份。

即时活用：

1、Good friends should______happiness and sorrows with each other. A. spare B. share C. enjoy D. know

2、Let Harry play with your toys as well , Clare---you must learn to . support B. care C. spare D. share 答案：B D

6、Anyhow, my goal is to provide humans with a life of high quality. 不管怎么说，我的目标是为人类提供

高品质的生活。

provide vt. & vi. 用法归纳：

（1）提供 The trees provide shade. 树提供阴凉。特别提示：表示“给…提供…”用“provide sth. for sb.”。Schools provide text-books for students. 学校为学生提供教科书。

（2）规定School rules provide that students mustn’t smoke. 校规规定学生们不能吸烟。

联想扩展：provide against 预防We all should provide against the spread of H1N1 flu. 我们都应该预防甲

型流感的传播。

provide for 养活；做准备He works day and night to provide for his family. 他不分昼夜的工作养活

家人。

provide…with 给…提供His firm is good and provides him with a car. 他的公司不错，给他提供了

一辆车。

provided / providing conj. 如果…话；只要

Provided that it will snow tomorrow, we will put off the sports meeting.如果明天下雪，我们就推迟运动

会。

特别提示：provided和providing都用于作状语。provided多用于正式文体；providing多用于口语。

即时活用：

1、They live on their small farm ____ the family with corn. A. providing to B. provided C. providing