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高二英语教案:Unit 5教案

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2013-02-28

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本文题目:高二英语教案:Unit 5教案

Unit 5 Meeting your ancestors 教案

核心单词

1. alternative

n.可供选择的事物;(两者或以上)可能的选择

adj. 供选择的, 二选一的

常用结构:

have no alternative but to do sth.

只能做某事;除¡­¡­外别无选择

We have no alternative but to go on.

除了继续下去,我们别无选择。

There was no other alternative but to fight till the victory.

除了战斗到胜利,别无选择。

联想拓展:

alternatively adv. 或者,二者择一地

alternate vt. 使交替;vi.交替;adj. 交替的;轮流的

高手过招:

(1)单项填空

In this school, the students have three courses, and seven courses. (2010¡¤01¡¤陕西师大附中月考)

A. required; alternative B. requiring; alternative

C. required; alternate D. requiring; alternate

解析:选A。require(尤指根据法规) 规定、需要,此处用过去分词required修饰courses,因为两者之间为被动关系。后空意思为¡°选择,选其一¡±,alternative符合句意。

(2)单句改错 (原创)

①I had no alternative but report him to the police.

②You have the alternative to speaking or keeping quiet.

③Tom and Harry do the work on alternative days.

答案:①report前加to ②to→of

③alternative→ alternate

2. arrest

vt. 逮捕,拘留,吸引(注意)

n.[C]逮捕

常用结构:

be arrested for sth. 因某事而被捕

arrest one? s attention吸引某人的注意

under arrest被捕;被拘留

The criminal was arrested yesterday.那名罪犯昨天被捕了。

What she did arrested my attention. 她所做的吸引了我的注意力。

高手过招

用适当的介词或arrest 的适当形式填空 (原创)

①I got arrested careless driving.

②Her uncle was arrest, but nobody knew the reason.

③Five youths in connection with the attack.

④The public applauded the of the criminal suspect.

答案:①for ②under ③were arrested ④arrest

3. preserve

v.保护,维持,保存

常用结构:

preserve sth. from 使¡­¡­免遭¡­¡­

You can preserve meat or fish in salt.你可以用盐保存肉或鱼。

It is one of the duties of the police to preserve public order.

警察的职责之一是维持公共秩序。

联想拓展:

preservable adj. 可保存的

preservation n. 保存

preserver n. 保护者,保存者

易混辨析:

preserve/conserve/reserve/protect

preserve v. 保护,维持,保存;

conserve v.保存,保护,强调珍惜;

reserve v. 指意见、看法的保留或座位的预定;

protect v. 保护,强调使其免受破坏或损害。

高手过招

(1)单项填空

①In spite of failing to save every endangered species, we may preserve the majority extinction.

(2010¡¤山东枣庄一轮验收)

A. Against B. with C. beyond D. from

②It is the duty of the police to social order.

(原创)

A. Save B.reserve C.preserve D. rescue

①解析:选D。preserve sth. from 使¡­¡­免遭¡­¡­,符合句意。

②解析:选C。A、D两项都意为¡°拯救¡±;B项意为¡°保留,保存¡±;C项意为¡°保护,维持¡±。根据句意可知,选C。

(2)完成句子 (原创)

①夏天收获的大量水果可冷藏或装瓶加以保存。

In the summer, large crops of fruit may by freezing or bottling.

②我认为这些有趣的旧习俗应该保存下去。

I think these interesting old customs .

答案:①be preserved②should be preserved

4. relief

n.减轻,解除

常用结构:

bring /seek/find/give/feel relief

带来/寻求/找到/予以/感到解脱

much to one?s relief=to one?s great relief

使某人宽慰的是¡­¡­

relief road 备用车道

relief map 地形图

I felt great relief when I heard I had passed the examination.

当听到已经通过考试时,我感到轻松了许多。

联想拓展:

relieve one?s feelings 发泄感情

relieve sb. of 使某人解除

The minister was relieved of his post.

部长被解除了职务。

高手过招:

单项填空

Hearing the news that her son was found, she breathed a sigh of .(2010¡¤山西太原五中检测)

A.excitement B. joy C. relief D. belief

解析:选C。按照句意此处为¡°减轻忧虑,松了一口气¡±,C项符合句意。

5. assume

vt. 设想,假定;主观认为;装出¡­¡­的样子

常用结构:

assume sb./sth. to be 假定/认为某人/事是¡­¡­

We assumed that you understood the situation.

我们认为你了解形势。

He assumed a well?informed manner but in fact he knows very little. 他装出一副见多识广的样子,而实际上他知之甚少。

联想拓展:

assumed adj.假装的,假的;假定的,设想的

an assumed result假定的结果

assuming adj.自负的,傲慢的,过分自信的;

conj. 假如 (后跟从句)

assumption n. 假定,设想

His look of astonishment was assumed.

他那惊讶的样子是装出来的。

He is too assuming in this attitude about the energy supply.他在对待能源问题的态度上显得过于自信。

Assuming that the weather is favourable, farmers will have a bumper harvest.

假如风调雨顺,今年农民将获丰收。

高手过招

完成句子 (原创)

①假如今天下午下雨我们该怎么办呢?

this afternoon, what shall we do?

②在证实他有罪之前我们必须要假定他是清白的。

We innocent until he is proved guilty.

答案:①Assuming it rains②must assume him to be

6. somehow

adv. 不知怎么地;以¡­¡­方式

常用结构:

somehow or other

不知是什么原因;由于某种原因;以某种方式

Somehow or other we became friends, I never knew just why it was.不知何故我们成了朋友,我绝不知道为什么会这样。

易混辨析:

anyhow/somehow/somewhat

anyhow 意为¡°无论如何¡±,相当于 anyway;at any rate;

somehow 意为¡°以某种方式(in some way or other)¡±或¡°由于某种原因¡±;

somewhat 意为¡°从某种意义上讲;有几分¡±,相当于 in a way, rather。

I always know I?d get the job, somehow.

也不知为什么,我总觉得能得到那份工作。

Somehow we must get to Glasgow.

我们得设法到格拉斯哥去。

He could have finished it on schedule, but somehow he fell behind.他原本能按预定进度做完这件事的,但不知怎么却落后了。

I am somewhat tired of this book. 我对这本书有点厌烦。

高手过招

选词填空(somehow/anyhow/somewhat) (原创)

①We must get the work finished or other by tomorrow morning.

②It may rain, but I shall go out, I don?t mind the rain.

③The price was higher than I¡¯d expected.

答案:①somehow②anyhow③somewhat

重点短语

7. regardless of

adj. 不管, 不顾

People should be hired regardless of race and sex.

雇用人员应没有种族、性别的差异。

He continued speaking, regardless of my feelings on the matter. 他不顾及我在此事上的感受而继续往下说。

联想拓展:

regardless adv. 无论如何;不管;不顾

disregarding /in spite of /despite 三者意义和用法相同,区别不大。

regardlessness n. 不注意

温馨提示:

in spite of the fact that句式表示¡°虽然;即使,不管事实上如何¡±。

although/though conj. 尽管,虽然;其后接句子。

高手过招:

单项填空

① the difficulties in talking, they can understand each other by body language.(2010¡¤安徽合肥八中检测)

A. Regardless of B. Although C. Though D. In spite

②Some people act regardless what will happen afterwards. (2010¡¤江苏盐城质量检测)

A.with B. as C. of D. for

①解析:选A。although与though是连词,后需跟句子,而the difficulties in talking是名词短语,故排除。D项表达有误。故选A。

②解析:选C。regardless of不顾,不管。符合句意。

8. fed up with

受够了;厌烦;饱受

I¡¯m fed up with waiting for her.我等她都等得不耐烦了。

What¡¯s the matter? You look pretty fed up.

怎么啦?你显得那么不耐烦。

联想拓展:

feed sb./sth. on sth. 给(人或动物)食物;喂;饲养

feed on(动物)以¡­¡­为主食

feed sth. to sb./sth. 给(人或动物)某物作为食物

高手过招:

用适当的介词填空 (原创)

①Several children were feeding bread the ducks.

②What do you feed your dog ?

③Cows feed grass.

④I?m fed up the same breakfast every morning.

答案: ①to ②on ③on ④with

9. cut up

切碎;使伤心,严厉批评

Peter, why don?t you cut up vegetables?

彼得,为何不把蔬菜切碎了呢?

联想拓展:

cut off 切断;剪掉

cut down 砍伐;削减

cut in 打断

cut out 剪去,删去;略去

cut into pieces 切成碎片

Don?t cut in while I?m talking!我说话时别插嘴!

高手过招

单项填空

Half the forest was to make room for the new road.

(2010¡¤江苏盐城质量检测)

A.cut off B. cut down

C. cut up D. cut away

解析:选B。考查短语辨析。cut off 切除;cut down 砍倒;cut up 将(木头等)分解开。

10. look ahead

向前看;为将来打算

联想拓展:

look back 向后看; 回顾

look out 留神;注意

look into 调查

look up 查找;形势好转;看望

look up to sb. 钦佩/尊敬某人

look through 仔细查阅

look forward to sth./doing sth. 盼望着

look on 旁观;看作

look over 快速浏览;复习

look down (on/upon sth.) 向下看; 轻视

Look out! There is danger ahead!当心!前面危险!

I?m looking forward to seeing you this summer vacation.

我盼望今年暑假能见到你。

高手过招:

完成句子 (原创)

①You should (翻阅字典查查这个生词).

②I am (盼望) hearing from you as soon as possible.

③ (当心) or you will catch cold.

④I have to (复习笔记) for the exam.

答案:①look up the word in a dictionary

②looking forward to

③Look out

④look over my notes

重点句型

11. If only it could be just like last year!

要是能像去年那样该有多好啊!

if only但愿;要是¡­¡­就好了。其后一般用虚拟语气。

If only I were a doctor. 这句话用的是一般过去时,意思是:我现在要是个医生就好了。与现在相对应的句子用一般过去时。

If only I had said nothing. 而这句用的是过去完成时,意思是:我当时什么都不说就好了。是与过去时态相对应的,故用过去完成时。

If only my son didn?t spend so much time before TV.

这句可以理解为一般现在时的虚拟语气,所以句子中使用了一般过去时态。原意为:要是我儿子不在电视前面待那么长时间就好了。

温馨提示:

only if表示¡°只有,只要¡±, 后接让步状语从句,主句采用倒装句式。

I wake up only if the alarm clock rings.

只有闹钟响了,我才会醒。

Only if a teacher has given permission is a student allowed to enter this room.

只有得到老师的允许,学生才能进入这个房间。

高手过招:

单项填空

Look at the trouble I?m in! If only I your advice.

(2010¡¤江苏徐州质量检测)

A. Followed B. would follow

C. had followed D. should follow

解析:选C。由句意可知此处为if only引导的条件状语从句,且用与过去事实相反的虚拟语气。

12. Abruptly she sat down, only to be scooped up by her laughing, shouting sister, Luna.

她突然坐了下来,结果被爱吵闹的妹妹露娜一把抱了起来。

only to do 是不定式作结果状语,意为¡°不料,结果却¡±,表示出乎意料或令人失望的结果。

I hurried to the post office only to find it closed.

我匆忙地去邮局,却发现它已经关门了。

He hurried home only to find the guests had left.

他匆匆忙忙赶回家, 结果发现客人们已经走了。

温馨提示:

现在分词也可以作状语表示结果,但表示的是意料之中的结果。

He dropped the glasses on the ground, bursting it into pieces.他把眼镜掉在了地

上,摔成了碎片。

高手过招:

单项填空

He got to the airport to find that the plane had left two minutes before. (2010¡¤浙江温州一模)

A.just B. only C. in order D. almost

解析:选B。¡°only+不定式¡±结构表示令人失望的结果。句意为:他到达机场,结果却

发现飞机在两分钟之前就飞走了。

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