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高二选修7 Unit 3 Under the sea 重难点及考点解析
| 文章作者:佚名 | 文章来源:网络 | 文章录入:henry | 更新时间:2009-4-15 | 字体: |

Unit 3 Under the sea 重点难点及考点解析

一、重点单词
1. witness
① vt.目击,作证,证明
1. We all came to witness history and watch the historic flight of teacher Christa McAuliffe.
我们聚集一起见证历史,观看教师克里斯塔•麦考利夫历史性的飞行。

2. Did anyone witness the robbery?
有人亲眼看到那次抢劫了吗?
witness an accident, a murde, a quarrel 目击一事故、谋杀事件、一场争吵
②vi. 作证人
He witnessed to having seen the man enter the building.
③n. 证人,目击者,证据,证明,证词
Life without a friend is death without a witness
在世无朋友,死后无证人。
The witness stated the facts very clearly.
证人把事实陈述得很清楚。
give witness on behalf of sb  替…作证
be a witness to …. 是…的目击者
witness to sth doing sth (在法庭上)作证
bear / give witness to sth 作证支持某人

2. accommodation
n. 膳宿,旅馆房间;容纳,提供,适应
Accommodation is expensive in this city.
这个城市住房昂贵。
I will do my utmost to help you find accommodation.
我将尽我最大之力帮你找到住处。
Can I raise a point about accommodation?
我可以提出一个关于膳宿供应的看法吗
To look for accommodation
寻找住处
Provide food and accommodation for sb
向某人提供食宿

3. abandon
abandon vt. 抛弃,离弃,遗弃;放弃
In his early days he abandoned medicine for literature.
他早年弃医学文。
The broken bike was found abandoned by the river side.
人们发现那辆损坏的脚踏车被扔在河边。
The scientist abandoned his research for lack of fund.
这位科学家因缺少资金而放弃了研究工作。
I would never abandon my friends.
我永远不舍弃我的朋友。
Only weak and cowardly natures abandon themselves to sorrow.
只有那些软弱怯懦之人才•沉溺于忧伤之中。
She abandoned herself to a diet and lost thirty pounds.
她沉迷于减肥而且减了三十磅 。

4. reflect 
reflect    vi &vt reflection vt. 反射,反映 vi. 反射,映出,思考
The still water reflected the full moon.
恬静的水面映出一轮圆月。
He reflected that he had no right to do this.
他经深思后明白自己无权做这件事。
Lanny continued to reflect upon it.
兰妮接着考虑这件事。
A man’s action reflects his thought.
一个人的行为反映出他的思想。

5. taste
n. 味道,品味,味觉,感受, 爱好 vt / vi 尝起来/ 品尝
Our dining-room tries to cater to all passengers' tastes.
我们的餐厅尽力满足所有旅客的口味。
A taste for adventure.爱好冒险
Beer tastes bitter .啤酒的味道是苦的。

6. narrow
n. 狭窄部分,海峡,隘路
a. 狭窄的,精密的,有限的,勉强的,眼光短浅的
They had to worm their way through the narrow tunnel.他们得钻过狭窄的隧道.
He was so narrow - minded he could see through a keyhole with two eyes.
他眼光狭窄,竟然能够用两只眼睛透过一个钥匙孔来看。
A lane is a narrow country road which winds between fields,connecting villages.
lane亦指郊外的狭窄小路,蜿蜒穿过田间,连接各个村落.

7. scare
scare vt. 恐吓,使惊吓
scared  adj. 惊吓的,恐惧的
be scared of (doing) sth /to do sth
Don‘t let the size of the task scare you.
这么多任务,别吓坏了你。
There was a bomb scare during the procession.
在列队行进时因怀疑有炸弹而引起恐慌.
I am not a bit scare of him.
我一点也不怕他。
I'm scared to look down from the top of a tall building.
我害怕从高楼楼顶朝下看。

二、重点短语
1.a pack of 一盒,一包;一伙…,一群…
He took a pack of cigarettes from his shirt pocket.
他从衬衣口袋里取出一包纸烟。
The book told a pack of lies.
这本书是一大堆谎言。
A pack of hounds chased the fox.
一群猎犬追捕狐狸。
I had a pack of cards.
我有一副扑克牌。
I smoke a pack of cigarettes a day.
我一天抽一包香烟。

2. be about to
be about to 表示即将发生的动作,意为“即将,正要,正准备,正打算”,不也具体的表将来
时间的副词或副词性短语连用,但可以与as或when引导的时间状语连用。
I was about ready to give up when the good news came.
当好消息传来时我正打算放弃。
Something unusual was about to happen.
某种不寻常的事正要发生。
We all felt that our luck was about to turn.
我们都以为我们的运气要转变了。
He is about to turn on the light.
他就要把灯打开。

3. come on 跟着来,开始,出台,上演 快点,赶快
The generals and soldiers came on in spite of heavy fire.
官兵冒着猛烈的炮火继续前进。
Fly the kite when a thunderstorm appears to be coming on.
在暴风雨即将来临的时候去放风筝。
与come相关的短语:
come about 发生
come across 偶然遇见
come forth 出来,涌现
come out 出版,(花)开
come through (电话)接通
come up 走近,上升
come to 总计
come up with 赶上,补充

4. in the distance 在远处,在很远的那边
We heard the bell striking 2 o' clock in the distance.
我们听见远处的钟在敲两点。
The sound of the motorbike faded away in the distance.
摩托车的声音在远处逐渐消失了。

5. ahead of (空间上/时间上)在……之前, 比…好/强
Ahead of us was a big river.
Time here is 9 hours ahead of London.
这儿时间比伦敦早九个小时
He is ahead of me in Chinese.
get ahead of 超越
By working hard he got ahead of the rest of the class.

6. at the time 当时
Admittedly, he didn’t know that at the time.
无可否认,他当时并不知道。
You didn't know how eager she was at the time.
你不了解她当时急切的心情。
At the time from 11 p. m to 1 a. m.
子时时分

7. sort out 分类,清理;澄清,解决(问题/困难)
Just dump everything over there I'll sort it out later.
先把东西都堆在那边--我等会儿再整理.
I sort out the mail.
我分拣邮件。

8. 与throw相关的短语:
throw cold water on   泼冷水       throw off            抛弃,摆脱
throw over           回棋,变换  throw away          浪费,拒绝
throw down          打倒,推翻    throw up            呕吐

9. 与out of 相关的短语:
out of breath  上气不接下气  out of date  过时的
out of control  失控   out of question  可能的
out of the question  不可能的  out of repair  失修

10. be/ become aware of / that…
be/ become (well) aware of / that…对…知道,明白;意识到
I want you to be aware of the situation before it affects you.
"我希望在情况影响你前,你能察觉到。"
I‘m very much aware of the lack of food supplies.
我深知食物贮备不足。
I am well aware that he is the one I should turn to.
我很清楚他就是我要求助的人。
11. upside down
upside down adv.颠倒,混乱上下翻转的
She was right! It was upside-down!
她说得对!是挂倒了!
Everything in the room was turned upside down.
室内的一切都被搞得乱七八糟。
He turned the table upside down.
他把桌子弄翻了。
The children turned the house upside down.
孩子们把屋里弄得乱七八糟。

三、重点句型
1.…but where the reef ended, there was a sharp drop to the sandy ocean floor.
在本句中where 引导的是状语从句。
A cinema is a building where film is shown.
电影院是放电影的馆所。
You shall put it up where we all can see it.
你该把它挂在我们大家都能见到的地方。
We‘ll pick up where we finished yesterday.
我们从昨天停止的地方继续进行。

2. It took over half an hour to get the boat back to James.
用了半个多小时的时间才把船划回到詹姆斯身边。
这是一个It takes (sb.) some time/sth. to do sth. 的固定句式,take 意为“花费、需要”,take 前也可用具体名词作主语。
It takes him three hours to do his homework everyday.
他每天要用三个小时的时间做作业。
It takes (sb.) some time/sth. to do sth. 的固定句式,take 意为“花费、需要”,take 前也可用具体名词作主语。
It takes him three hours to do his homework everyday.
他每天要用三个小时的时间做作业。
It takes quite a bit of time to get from London to Glasgow.
从伦敦到格拉斯哥要花很多时间.

四、疑难辨析
as, when和while
1) as 强调主从句中谓语动词所表示的动作同时发生。 从句表示"随时间推移"连词能用as,不用when 或while。
As the day went on, the weather got worse.
日子一天天过去,天气越变越坏。
 2) when 可表示瞬间、时间段,主从句动作同时发生,也可以先后发生。当从句的动作发生于主句动作之前,只能用when 引导这个从句,不可用as 或 while。
When you have finished your work, you may have a rest.
3) as, when 引导短暂性动作的动词。
Just as / Just when / When I stopped my car, a man came up to me.
4) while 用于同时进行的两个延续性动作相伴发生,常对同类动作进行对比。
1.___________  you have finished your work, you may have a rest.
2.____________ I stopped my car, a man came up to me.
3._____the day went on, the weather got worse.
4.______________ was walking down the    street ,I met an old friend .
Keys: 1. When 2. When (As) 3. As 4. When (while)

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