重点单词(人教版必修 2 Unit 3 Computers)(讲义)

1. 学习单词，注意重点单词的用法并灵敏运用这些单词。

2. 掌握signal的用法及与其他词的区别。

重点：solve, explore, anyhow, signal, arise
难点：signal的用法及区别。

一、重点单词
【单词学习】
1. solve v.解决；解答★★★★
solve a difficulty 解决困难
solve problem/question 解答问题
solve puzzle 解谜
Instead, let him attempt to solve things by himself.
相反，让他自己试着解决一些事情。

Help me to solve my financial troubles. 请帮我解决经济上的困难。

I solved the word puzzle in three minutes. 我用三分钟解出了那个字谜。

solution n. 解决方法；解答，后面常跟of，to，for。

The solution to the problem required many hours.
解决这个问题需要好几个小时。

This is the solution of/to/for the problem.
这是这个问题的解决方案。

He was very bright and _________ the crossword in ten minutes.
A.solution
B. solved
C. settled
D. ended
答案：B
思路分析：solve the crossword解答填字游戏，句意：他很聪明，非常钟就解出了这道填字游戏。

应选B。

2. explore v. 探测；探险★★★
explore for oil 勘探石油
explore into 探究
explore a secret 探究机密
We must explore all the possibilities.
我们必须讨论所有的可能性。

It is necessary to explore this matter in more detail.
有必要更为详细地对这件事进展讨论。

We need to explore into the application of meta materials.
我们需要进一步探究超材料的应用问题。

explore经常与explode(爆炸)，exploit(利用，剥削)，explain(解释，说明)，export〔出口，输出〕等形似词一起考察。

The geologists explored _________ oil _________ our farm.
A. ×; on
B. ×; in
C. for; on
D. for; in
答案：C
思路分析：explore for “勘探；考察〞，在农场是on the farm。

3. anyhow adv. 尽管；即使如此；无论如何★★★
anyhow＝anyway 无论如何，不管怎样
somehow 用某种方式；不知怎么地
somewhat 略微，有点
He said he didn’t know much about computers but he’d help us anyhow.
他说他不太懂电脑，但是尽管如此，他还是会帮助我们。

Anyhow，I must be going now. 总之，我如今得走了。

Of course I don’t mind taking you home, but I’m leaving anyway.
我当然不介意带你回家，但是无论如何我得走了。

根据中文完成句子
1. 我感到不太舒适，但即使如此我也会参加会议。

I am not feeling quite well, but I will _________________________________.
2. 我那么匆忙以致于随意穿上了衣服。

I was in such a hurry _______________________________________________.
答案：1. attend the meeting anyhow 2. that I put my clothes on anyhow
思路分析：anyhow/anyway引导让步状语时一般放在句中或句末，其前常有连词but。

4. signal v.发信号；说明，预示n.信号★★★★
signal to sb. to do sth. 向某人发出做……的信号，示意某人做某事
signal to sb. 向某人发出信号/示意
signal that 用信号指示，示意某人……
signal to do…用信号指示做……
The police signaled the driver to stop his car by raising his hand.
警察举手示意司机停车。

All I get is a busy signal whenever I dial his number.
我什么时候拨他的听到的都是忙音。

mark，sign，signal，symbol
sign, signal, symbol, mark这几个词都有“符号，标记〞的意思。

sign:指人们公认事物的记号、标志，也可指某种情况的迹象。

You mustn’t smoke in the room with a “No Smoking〞sign.
你切勿在有“请勿吸烟〞标志的房间里吸烟。

The rain showed no sign of stopping.
雨一点也没有要停的迹象。

signal: 指为某一目的而有意发出的信号、暗号。

When they found the ship was sinking, they immediately sent out the emergency signal SOS.
当他们发现船正在下沉的时候，立即发出了SOS紧急求救信号。

symbol: 指有象征意义的或表达某种深邃含义的特殊事物。

A dove is often used as a symbol of peace.
鸽子常被作为和平的象征。

mark: 既可指为便于识别而有意做的标记，又可指自然形成的标记或有别于其他事物的特征。

He made some marks in the article where necessary.
他在文中必要的地方做了一些记号。

Good manners are the mark of gentleman.
彬彬有礼是绅士的特征。

Cyclists who give _________ before turning or stopping help prevent accidents.
A. sign
B. signal
C. symbol
D. mark
答案：B
思路分析：句意：骑自行车的人在拐弯或停车前发出信号有助于防止事故发生。

signal “信号〞，应选B。

5. arise vi.发生；产生；出现★★★★
arise“出现，发生〞，主语多为抽象名词argument，problem，quarrel，movement等。

arise from由……产生
arise out of 起因于……；由……引起
How did this quarrel arise?
这场争吵是由何种原因引起的？
When I arose from the chair，my father and Eleanor’s father were in deep conversation.
当我从椅子上站起来时，我父亲和埃莉诺的父亲谈兴正浓。

“由……引起、导致的〞的多种表达：
A number of high buildings _________ where there was nothing a year ago but ruins.
A. has arisen
B. have arisen
C. has raised
D. have raised
答案：B
思路分析：arise“出现〞。

句意为：很多高楼在一年前还是废墟的地方出现了。

1. This difficulty can easily _____________.
A. solve
B. to solve
C. be solved
D. be solving
*2. The oceans have not yet ________________.
A. been fully explored
B. fully been explored
C. fully explored
D. explored fully
3. Many road accidents ________ from careless driving, according to the recent reports from the police.
A. involve
B. reduce
C. arise
D. increase
*4. I thought it would be easy, but a lot of problems have ________.
A. risen
B. raised
C. arisen
D. happened
答案：1～4 C A C C
思路分析：1. 主语是difficulty, 后面要用be solved。

2. 根据句意用被动，排除C、D，fully要放在been explored中间。

3. 句意：根据警方最近的报告，很多道路交通事故是由驾驶员粗心造成的。

4. but表转折，说明很多问题出现了。