e.g. a lack of food /money/skills 缺乏食物/金钱/技能

The trip was cancelled through lack of interest. 因为缺乏兴趣这次旅行被取消了。

He lacks confidence. 他缺乏信心。

知识拓展：lacking adj. 缺乏;没有;匮乏;不足

9. surroundings n.[pl.] 环境;surround v. 围绕;环绕 surrounding adj. 周围的;附近的

e.g. Everyone likes to work in pleasant surroundings. 人人都喜欢在愉快的环境中工作。

启发学生思考问题，哪些单词用作名词时常用复数形式?

10. catch/gain/get sight of 发现，看出

Ø lose sight of 看不见,忘记

Ø lose one's sight 失明

Ø at first sight 一见就;乍看起来 At first sight, the problem seems easy.

Ø at (the) sight of 一看见就…… At the sight of the teacher, the boy ran away.

Ø be in sight 看得见，在眼前 The island is still in sight.

Ø out of sight 看不见 Out of sight, out of mind.

11. take up

to fill or use an amount of space or time 占用(时间);占据(空间)

to learn to or start to do sth 开始做(某项工作);开始从事

to accept sth. that is offered or available 接受(建议或能得到的东西)

e.g. The table takes up too much room. 这张桌子太占地儿。

They have taken up golf. 他们学起打高尔夫球来了。

She took up his offer of a drink. 他请她喝一杯，她接受了。

He takes up his duties next week. 他下周就要开始履行职责。

12. sweep up 打扫;清扫;横扫;涌向;快速地抱起

e.g. He swept up the baby up into his arms. 他一把将孩子抱进怀里。

Unit 4:

1. concentrate vi. 聚精会神，集中思想，多与 on 和 upon 或连用 Concentrate on your work. 集中精神工作。

e.g. A driver should concentrate on the road when driving.

开车时驾驶员的注意力要集中在路上。

Industrial development is being concentrated in the west of the country.

这个国家的西部正集中发展工业。

2. acquire vt. 获得, 学到，取得，拥有 acquired, acquiring

e.g. She acquired a knowledge of the English by careful study.

她认真学习而精通英语。

Some smoking and alcoholic drinks are an acquired taste and are not in born.

抽烟喝酒往往是一种后来习得的嗜好，并不是生来就有的。

3. accuse sb. of doing sth. 指责，指控 accused, accusing

e.g. The police accused him of murder. 警方指控他谋杀。

She accused him lying. 她指责他说谎.

He was wrongly accused of stealing. 他误遭控告犯偷盗罪.

4. be of interest/ importance, value, use, help, ... = interesting/important/valuable/useful/helpful...

e.g. This is a matter of great importance. 这是一件非常重要的事。

The book is of great value to me. 这本书对我来说有很大价值。

There is nothing interesting/of interest in today's newspaper.

今天报纸上没有什么新鲜事。

5. journalist n.新闻记者;新闻工作者

e.g. He is a professional journalist. 他是一位专门的新闻从业人员

6. delighted a. 高兴的, 快乐的

e.g. I am really delighted. 我真的很高兴。

【词语联想】

delight n. 高兴, 愉快 ; vt. 使高兴, 乐于; vi. 感到高兴(或愉快、快乐)

e.g.Singing is her chief delight. 唱歌是她的主要爱好。

【习惯用语】

Ø take delight in 喜爱, 以...为乐

Ø find delight in 喜爱, 以...为乐

Ø have delight in 喜爱, 以...为乐

Ø to sb.'s delight 令人高兴的是...

7. assist n. 帮助, 协助; vt. 帮助, 促进; vi. 协助, 参加

【习惯用语 】

Ø assist sb. with sth. 帮助某人[做某事]

Ø assist sb. to do sth. 帮助某人[做某事]

Ø assist sb. in doing sth. 帮助某人[做某事]

◆ 区别: help, aid, assist 都含"帮助"、"援助"的意思。

Ø help 系常用词, 意义较aid, assist 强, 指"以积极态度给予各方面的帮助", 强调"受助者得到帮助或好处", 并着重"受助者对帮助的需要"

e.g. Please help me arrange these papers.

请帮我整理这些文件。