英语 必修3 unit2单词重点解析

Unit 2

1. diet c.&.u.日常饮食

Proper diet and exercise are both important for health.

A balanced/healthy diet is necessary for good health. People who are on a diet mustn’t have chocolate.

on a diet/go on a diet节食

vi.节食

She is always dieting but she never seems to lose any weig ht.

2. protective adj.给予保护的;保护的

protect vt.

protection n.

3. balance v.平衡;权衡 n.天平;平衡

How long can you balance on one leg?

Try to keep a balance between work and relaxation. strike a balance between A and B

把两者安排妥当

keep the balance of nature keep one’s balance

lose one’s balance be out of balance Suddenly the boy lost his balance and fell over.

4. roast

adj.烤制的 v.烤;烘;烘烤

Put the meat into the oven and roast it for a few minut es.

The meat is roasting in the oven.

Tonight we will have roast beef for supper.

5. ought to v.aux.应该

ought to do sth

You ought to apologize for what you said just now. ought not to do sth

Such things ought not/oughtn’t to be allowed.

Ought I to write to express my thanks? ought (not)to have done

You ought to have taken the medicine.

When ought we to begin our work?

He ought to go there with you, oughtn’t he?

6. lose weight减肥

put on weight/gain weight增肥

watch one’s weight控制体重

7. slim adj. 苗条的

a slim figure 苗条的身材

vi. 变细；减肥

She is slimming by dieting.

8. curiosity n.好奇心

out of curiosity出于好奇

Curiosity drove him inside.

He is a boy full of curiosity.

curious adj.

curiously adv.

The boy was curious about everything he saw.

I was curious to hear what they would say about this.

很想知道

9. raw生的，未加工的

The Japanese are used to raw fish as food.

The supply of raw materials to the factory should be guaranteed.

10. get away with逃脱，被放过

How did he get away with cheating?

携带…偷逃

Thieves got away with computer equipment worth 30,000 dollars.

11. discount折扣

They were selling everything at a discount.

They give us a 10% discount.

12. win…back赢回

The team are determined to win the prize back next year.

14.weakness:

弱点,缺点: He has his own weakness of his character.

虚弱: ----What’s the cause of his weakness?

----Maybe he has caught a cold.

15.strength:力量，体力

It’s going to be some time before I recover my full strength.

Does he have enough strength to lift these weights?

16.consult:

咨询If you feel pain in your back, please consult your doctor.

参考If you have no idea about it, you’d better consult the medical book.

17.digest:

vt.消化Humans cannot digest everything.

vi. It is a long time to wait for the food to

digest after dinner.

n. 摘要Many stude nts like to read Readers’ Digest.

18. poison n.毒药poisonous adj. 有毒的

Some colorful mushrooms contain a deadly poison. The dog was killed by rat poison.

19.earn one’s living谋生

The man earned his living by selling newspaper.

make/earn a living by doing sth

20.debt:债[c]

Before I left, I had to pay off all my debts.

[u] 词组in debt; get into debt

He died, leaving his family in heavy debt.

21.spy: n.间谍

He once worked as a British spy in Russia.

v. 从事间谍活动

He spied for his country for more than 10 years. 暗中监视spy on

Have you been spying on me?

22.limit:限制vt. limit sth to sth 将…限制在…范围内You should limit your speed to 80 kilometers per hour n. 限制There is a limit to his patience

within limits在一定的限度之内

limited有限的a limited speed

23.benefit:益处[c]

The new rule will be of benefit to everyone.

There are certain benefits of modern medicine.

v. These books will benefit all the poor students.

All the poor students will benefit from these books. bine:结合combine A with/and B

This machine combines a telephone and fax machine. Combine all the ingredients in a bowl.

25.cut down:削减

We need to cut down the article to 2000 words.

The doctor suggested him cutting down on smoking.

26. before long:不久以后=soon

long before很久以前

long before….在…很久以前

They will know each other well before long.

They knew each other well long before.

They had heard of each other long before they were introduced to each other.