概要：知识拓展：constant adj.连续发生的;不断的;重复的;4. previous adj.先前的;以往的;(时间上)稍前的e.g. No previous experience is necessary for this job. 这一工作无需相关的经验。I couldn't believe it when I heard the news. I had only seen him the previous day.听到这个消息时，我不敢相信;我就在前一天还见到过他。知识拓展：previously adv. 先前的;早先e.g. The building had previously been used as a hotel. 这座楼房早先曾用作旅馆。5. bend v.(bent bent)弯曲;使弯曲;弯腰;弯身;常用搭配有: bend one's mind/efforts to sth. 致力于某事;bend sb.to sth. 迫使;说服 bend the truth 歪曲事实e.g. It's hard to bend
高二英语必修五知识点讲解,标签：高二英语知识讲解大全,高二学习方法,http://www.kgf8.com知识拓展：constant adj.连续发生的;不断的;重复的;
4. previous adj.先前的;以往的;(时间上)稍前的
e.g. No previous experience is necessary for this job. 这一工作无需相关的经验。
I couldn't believe it when I heard the news. I had only seen him the previous day.听到这个消息时，我不敢相信;我就在前一天还见到过他。
知识拓展：previously adv. 先前的;早先
e.g. The building had previously been used as a hotel. 这座楼房早先曾用作旅馆。
5. bend v.(bent bent)弯曲;使弯曲;弯腰;弯身;常用搭配有: bend one's mind/efforts to sth. 致力于某事;bend sb.to sth. 迫使;说服 bend the truth 歪曲事实
e.g. It's hard to bend an iron bar. 把铁棒弄弯很不容易。
She bent her head and kissed her daughter. 她低下头吻了她的女儿。
6. press v. 压;按;推;挤;坚持;敦促 n. 报章杂志，新闻工作者，新闻界
e.g. She pressed a handkerchief to his nose. 她用手绢捂住鼻子。
She pressed down hard on the gas pedal. 她用力踩下油门踏板。
He is still pressing her claim for compensation. 他仍坚持索赔。
The press was/were not allowed to attend the trial. 庭审谢绝新闻采访。
7. switch n. & v. 用作名词表示“开关;转换”。用作动词表示“转换”。
e.g. She made the switch from full-time to part-time work when her first child was born. 第一个孩子出生后，她就由全日工作改为非全日工作。
Press these two keys to switch between documents on screen. 按这两个键就可以在屏幕上的文件之间进行切换。
I can't work next week, will you switch with me? 下个周末我不能上班，咱俩换个班好不好?
8. lack n. & v. 用作名词，表示：“缺乏;短缺”;用作动词，表示：“缺乏;短缺;没有;不足”。
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)
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