以下为课件内提取的文本内容，仅供参考：

Words and expressions

Unit 7

1.deadly 致命的；极有害的；非常的

Cancer is a deadly disease.

癌症是一种致命的疾病。

A deadly silence filled the class.

教室里极其安静。

2. Infect 传染；感染（精神）

Infect someone with 将……传染给某人

be/become infected with 感染上，沾染上

Some of them became infected with bird flu and died

Her spirit infected me a lot.

3.imaginary 想象中的；虚构的

The story is not real, it is only imaginary.

Imaginative 富于想象力的；爱想象的

An imaginative child 有想象力的孩子

Imaginable 可想像的；想像的到的

4.via 经由；通过

He went to Russia via Mongolia

The deaf and dumb people communicate via gesture language.

5.transmit 传播；传送；传达

Iron transmits heat.

The world Cup is being transmitted live now.

n. Transmission 发射；传导

6.persuade 说服，劝服，使某人相信

Persuade sb 劝服，说服某人

Persuade sb to do sth 说服某人做某事

Persuade sb into (doing) sth 说服某人做某事

Persuade sb out of (doing) sth 说服某人不要做某事

Persuade sb of sth 说服某人信服某事

Persuade sb that从句 使某人相信

Try to persuade sb to do sth 劝说某人没有成功

7.immune 免疫的；免除的；豁免的

Be immune to/from/against 免疫的；免于

The medicine will make you immune to this disease

8.defenseless 无防备的

defense n & v 防御；防卫

defend v. 防卫；保卫

defensive 防御用的；防御性的

9.unprotected 无保护的；无防卫的

v. Protect 保护；保卫；防御

Protect sb /sth from/against 保护某人或某物使其免受……

You need warm clothes to protect you against the cold

n. Protection 保护 adj. Protective 保护的

10.lack n & vt/ vi 缺乏；短少

作名词时 lack of 缺乏； 缺少

作不及物动词时 常和介词for 搭配（用于否定句）

She doesn't’t lack for money.

be lacking in (wisdom,courage,humor)缺乏(某种品质、特点等）不够……

11.proper 合适的；适当的

常与介词 for 搭配

A proper tool for the job 适用于做这个工作的工具

12. Available 可利用的；可达到的；有效的

You will be informed when the book is available.

13.break down

1.破坏

2.（因机械、电力等故障）停止运转，失灵

3.失败；崩溃；瓦解

4.（健康）衰弱；（人）垮了

5. 分解

His small electric fan broke down.

The peace talks have broken down.

She will break down under such pressure of work.

14. discourage 使泄气；使失去信心

Don’t let one failure discourage you,try again.

discourage sb from doing sth 劝阻某人做某事

discouraged 感到沮丧的

discouraging 令人沮丧的

Encouraged 受到鼓舞的

Encouraging 令人鼓舞的

15.cheer 使高兴；使鼓舞;欢呼；喝彩

Cheer sb up

Your visit has cheered the sick man .

Everyone was cheered by the good news.

The boys cheered their football team.

n. 欢呼声

A cheer arose from the crowd when he came.

16. Suffer from 遭受（痛苦、疾病、损失等）

Every night he suffers from headache.

They suffered huge losses in the earthquake.

n.Suffering 痛苦；困难

17.recover vt & vi 恢复；康复

She recovered her health.

I think she will recover soon.

recovered adj. 痊愈的

be recovered from (illness)

Are you recovered from your illness?

18.contrary adj & n 相反的；相对的； 反面

Hot is the contrary of cold

On the contrary 正相反

I am not sick; on the contrary I am quite well.

19.live with 忍受；接受

You must live with the fact you are an adult.

No matter how bad the situation may be, you must live with it.

20.free from 不受……的影响

He wants to live a life entirely free from trouble.

free of 远离； 摆脱

If your wages are very small, you will be free of income tax.

二．句型转换与完成句子。

1.A. I am not clever enough to find a possible solution to the problem.

B. If I _____clever enough, I _____ _____a possible solution to the problem.

2.A. It’s a pity that I can’t recite that poem.

B.How I ______that I ______ ______that poem!

were

would find

wish

could recite

3. A. AIDS is a disease that stops a person from defending himself against infections and illnesses.

B. AIDS is a disease that _________ a person ___________ against infections and illnesses.

4.A. In 2002, there were 3.2 million children in all who were infected

with HIV.

B. In 2002, the ______ _______of the children infected with HIV ______ 3.2 million.

leaves

defenseless

total number

was

1.????? A. The disease is spreading fast in Africa mainly because people there lack proper health care, prevention an education.

B. The disease is spreading fast in Africa mainly because of __ _____ ___ proper health care, prevention an education.

a lack of

1. ?我们的企业因缺乏投资而日子不好过。

Our business has ______ ______lack of investment.

2.?这句子没有错误。

This sentence__ _____ ____mistakes.

1.来，冒险一试，也许你会失败，但值得一试。

Come on, and____ __ ______. You may lose , but it’s _______ ________ .

suffered from

is free from

take a chance

Worth trying

9.????? 他尽情地过了一生。

He lived his life___ _____ _______.

?

10．目前我们甘心在一旁观察和等待。

____ ____ _______we are content to watch and wait.

11.由你来负责预防森里林火灾。

____________of forest fires __ ___ ___you.

to the fullest

For the moment

Prevention

is up to

1.????? 和平谈判已经失败了。

The peace talks____ ____ ________.

2.????? 人们对爱滋病毒携带者的态度是错的。

People ____ _____ __________ towards those with AIDS.

have broken down

show wrong attitudes

3. 我希望我十年前认识他。

I wish I had known him ten years ago.

1.????? 如果你昨天来，你就看见他。

If you had come yesterday, you would have seen him..

2.????? 我建议我们马上动身。

I suggest that we (should ) start out at once .

Homework:

Go over the language points.

Preview next period----- Grammar.