高中英语选修七unit3知识点

选修七Unit 3 Under the Sea一、语言要点I1. annual adj. 每年的；按年度计算的/ n. 年刊；年鉴[重点用法]annually adv. 年年地, 每年地[典例]1) an annual income. 年收入2) an annual report年度报告2.witness n. 目击者；证人；证据vt. 当场见到；目击[典例]1) He is the witness to the accident. 事故的目击者2) This old auditorium has witnessed many ceremonies. 这个古老的礼堂内举行过许多次典礼[重点用法]give witness on behalf of sb. 为某人作证3.accommodation住所[重点用法]accommodate v. 向...提供, 容纳, 调和; 适应accommodation address临时通讯处accommodation allowance膳宿津贴[典例]1) The high cost of accommodation makes life difficult for students in London．由于住宿费用昂贵，伦敦的学生感到生活困难。

2) The university offers excellent accommodation for summer visitors．这所大学为夏季来访者提供了很好的住宿。

4.abandon vt. 放弃；遗弃；抛弃n．放任, 狂热[重点用法]abandon oneself to sth./doing sth. 沉溺于abandon …to sb．把……舍弃给…with abandon放任地；放纵地；纵情地[典例]1) They abandoned all hope of finding an effective way to solve the problem．他们放弃了寻找有效方法解决问题的所有希望。

2) We should keep off those who abandon themselves to drugs．我们要远离那些吸毒成瘾的人。

3) Don't waste the food left, and abandon it to the dog．不要浪费剩下的食物，把它舍弃给狗吃。

5.reflect vt. 映射；反射vi. & vt. 思考[重点用法]reflection n．反射；反映；思考；沉思reflective adj．反射的；反映的；沉思的reflect on v. 思考，反省[典例]1) Her severe look reflected how she really felt．她那冷峻的神情反映出她心中的真正感受。

2) Mirrors reflect light．镜子能反射光线。

3) I reflected on possible reasons for my failure．我仔细考虑导致我失败的种种原因。

[练习]用reflect的相关介词或正确形式填空.1)The moon appears a _______ surface of the lake．2)After a minute's _____，he answered．3)The plan ________ which he reflected was ridiculous．4)The problems ________ at discussion are to be dealt at tomorrow’s meeting.Keys: 1) reflective 2)reflection 3)on 4) reflected6.aware adj. 意识到的；知道的[重点用法]unaware不察觉的, 不知道的awareness n. 知道, 晓得be／become aware of sth．意识到某事be aware that-clause知道……；意识到……make sb．aware that-clause提醒某人注意……make sb．aware of…让某人注意到……[典例]1) He wasn't aware of the danger．他没有意识到危险。

2) Is she aware that I'm coming? 她知道我要来吗?注意：aware后跟名词性从句时，一般在从句前不能用of，但在what从句前必须用of。

[练习] 用恰当的介词或aware恰当的词性填空。

1) Also when you write your goals in a particular way you are able to make yourself continuously aware ______ situations that will bring you nearer to your goal．2)The principal didn’t seem to be aware_______ there should have been so much dispute about the decision．3) Health officials throughout the world have tried to make people raise______ about AIDS.4) Mike seems______ of the trouble he’s causing, ot herwise he would stop it．Keys: 1) of 2) that 3)awareness 4)unaware7.scare vt. 恐吓vi. 受惊吓[重点用法]scaring adj．令人害怕的；吓人的scared adj．受惊吓的；感到害怕的be scared of…(=be afraid of) 遇到…(某种事物或行为)而害怕be scared to do．··(=be afraid to do)不敢做……be scared to death吓死了[典例]1) You scared me by coming in so quietly．你这么悄悄地进来吓了我一跳。

2) Most girls are scared to light the firework.大多女孩不敢放烟花。

V 重点词组（旨在提供综合运用所需材料）1. sort out整理；挑出; 解决(问题／困难)[短语归纳]sort through 查看并挑选出put away 把……存放好[典例]1) I've sorted out the papers that can be thrown away．我已经把那些可以扔掉的报纸整理出来了。

2) We've got a few lime problems to sort out．我们有几个小问题要解决。

3) He was sorting through a pile of papers on his desk他在整理桌上的一堆文件。

2.help out 帮助……（摆脱困难或危难）；协助；使……脱离困境[短语归纳]help sb with sth帮助某人做某事with the help of在...的帮助下, 借助help oneself to请随便自己动手(夹菜吃、用……等)can't help doing sth禁不住can't help but do sth只得；不得不[典例]1) Can you help me out with the maths problem? 你能帮我解出这道数学题吗?2) Please help yourself to some fish．随便吃点鱼。

3) She can't help laughing．她忍不住大笑起来。

4) I can't help but wait．我只得等。

3.throw oneself out of 跃出[典例]1) The man suddenly threw himself out of the water and said“I'm here'’。

那个人突然跃出水面说“我在这儿”。

[短语归纳]throw oneself at冲向throw oneself into投身手；积极从事throw away扔掉throw up呕吐throw sb into prison把某人投入监狱；throw at对准向……扔去(希望击中)；throw to向……(方向)扔去4.upside down 上下翻转过来[短语归纳]inside out里面翻转过来的[典例]1) The naughty child is always turning everything in the room upside down．这淘气的孩子老是把房问的东西搞得乱七八糟。

2) He wore the sweatshirt inside out．他当时把运动衫反过来穿。

VI 重点句子（旨在提供句子结构等所需材料）1. It was a time when the killer whales, or “killers” as they were then called, helped the whalers catch thebaleen whales that were on their annual migration.那个时期，虎鲸（当时被称为“杀手”）帮助捕鲸人在每年须鲸迁徙时捕捉须鲸。

[解释]It was/is a time when 曾经一度（那时）[典例]1) It was a time when motorcars were rare. 那是汽车很罕见的时代。

2) It was a time when she could not bear the pain and wanted to kill herself.她曾经无法忍受病痛，想结束自己的生命。

2. I had already heard that George didn’t like being kept waiting, so even though I didn’t have the rightclothes on, raced after him.我早就听说过，乔治不喜欢等人，所以尽管我还没穿上捕鲸该穿的衣服，还是跟在他背后跑了起来。

[解释]even though=even if即使，即便（引导让步状语从句）[典例]1) We won’t give up even if we should ten times.即便我们失败十次，我们也不会失败。