英语是世界上最被广泛使用的第二语言，精品小编准备了高二英语期末必背Unit3语言点，具体请看以下内容。

1 bet

a) v. risk ( money) on a race or on some other event of which the result is doubtful

I don’t enjoy betting.

She bet me $20 that I couldn’t be able to give up smoking.

b) v. be certain about sth

I bet it will be fine tomorrow.

c) n. arrangement to risk money

They made a bet on the white horse.

d)v.  opinion , prediction

My bet is that they have got held up in the traffic.

2 permit

a) v. give permission for sth; allow

permit n./pron.

permit sb. to do sth.

permit doing sth.

We don’t permit smoking in the office.

Permit me to explain it.

b) n. 许可证, 通行证

He took out a permit to hunt when the policeman asked why he hunt deer.

3 stare : v. look at sb./sth. with eyes wide open in fixed gaze

It is rude to stare.

They all stared in amazement.

4 jealous : adj. feeling or showing love or affection

He was jealous of her success.

Jack got a nice job—Mary was jealous of him.

5 scream

a) 尖声喊出,喊出,(指风,机器等)发出大而尖的声音

She screamed out at me in anger.

The hurricane screamed outside.

b) n. loud shrill piercing cry or noise

a scream of pain

a scream of excitement

Useful expressions

1 make a bet : 打赌

Have you ever made a bet with a friend?

2 go ahead : be carried out ; take place

Go right ahead.

Despite the bad weather , the journey will go ahead.

The building of the new bridge will go ahead as planned.

3 by accident : as a result of chance or mishap

I only found it by accident.

4 account for : be the explanation of sth, explain cause of sth.

His illness accounted for his absence.

Please account for you dispgraceful conduct.

5 to be honest : 老实说

Well, to be honest, I have none.

To be honest, she is very beautiful.

6 in rags : 衣衫漏褴

The old man is in rags.

7 get into trouble: cause trouble for oneself

Even an experienced climber can get into trouble.

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