Unit3 Under the sea
一．单词考点
Section A Warming-up,Reading&Comprehending
1.witness的依法 ⑴作vt时，“目击，当场见到” eg:Did anyone witness the robbery? ⑵作vi时，“作证” 搭配：
witness for/against为……作证/作了不利于某人的证明 witness to(doing)sth.作证证明(做)某事 eg:She witnessed to having seeing the accident.
⑶作n时，[C]“证人，目击者”[C,U]“证词；证据；证明”
eg:The police appealed for(呼吁) the witnesses to come forward(站出来). 搭配：
a witness to sth.某事的证人 in witness of作为……的证据
give/bear witness to介/on behalf of证明，为……作证 eg:Who will give witness to the accused(被告)?
2.accommodationn[C]“房间，住所” [pl.]“膳宿”(—accommodatevt“适应，调节，调解，留宿，供给”) 搭配：
make accommodations for…为……提供膳宿
accommodate…to…=adapt…to…使……适应……
accommodate oneself to…=adapt oneself to…使某人(自己)适应…… accommodate sb. with sth.向某人提供某物
eg:①The travel agency booked flight and accommodations for us. ②My partner made accommodations for me in Hainan. 3.opposite的用法 ⑴作prep时，“与……相对，在……对面” eg:I sat opposite him during the meal. ⑵作adj时，“对面的，另一边的” 搭配：
（be）opposite to在……的对面
on the opposite side of...在……的对面
eg:We live further down on the opposite of the road. ⑶作adj时，“相反的，迥然不同的” 搭配：
be opposite to/from…与……相反/不同 eg:His opinion is always opposite to/from mine. ⑷作n时，“对立面；反面；对立的人或物”
eg:He is honest and hard-working,but his twin brother is just the opposite. 4.be about to do sth.“即将做……，就要做……”
不与表示将来的时间状语连用。此时when为并列连词，意为“这时”。 搭配：be about to do…when…正要做某事……这时…… eg:I was just about to leave when Tom arrived.
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5.fleev“逃避，逃跑，逃离”的用法
搭配：
flee from…从……逃跑 flee to/into…逃到……
flee in all directions四处逃窜
eg:①The customers fled from the bank when the alarm sounded. ②During the civil war thousands of people fled the country. 区别：flee,escape
⑴flee指遇到危险或威胁时逃离、逃开、疏散；指慌慌张张地逃离，强调动作。 ⑵escape指有计划地逃脱，还可指精神上的逃避或退避，强调结果。 6.depthn[C,U]深(度)；深处
短语：
in the depth(s) of在……深处；在极端中
within/in one’s depth为某人所能理解；某人力所能及
beyond/out of one’s depth超出某人的理解力；非某人能力所及 eg:①Nobody knew the depth of her love for the child. ②An air-raid(空袭)sounded in the depth of night. ③—What’s the depth of the well?
—It’s 110 feet in depth. 7.meantime(=meanwhile)的用法 ⑴作n时，“在……期间” 搭配：
in the meantime在此期间，与此同时 for the meantime暂时，眼下
eg:Can you watch TV and do your homework in the meantime? ⑵作adv时，“同时，其间”
eg:I’ll contact them soon.Meantime don’t tell them I’m back. 8.urge的用法 ⑴作v时，“催促，敦促，力劝” 搭配：
urge sb.to do sth.催促某人做某事 urge sb./sth.on催促某人/某物前进 eg:①He urged the horses on with a whip. ②Tom urged her to stay. ⑵作v时，“极力主张，大力推荐” 搭配：
urge that从句(特殊虚拟语气) 极力主张；强调…… It is urged that从句(特殊虚拟语气) 坚决要求…… eg:She urged that I (should)apologize to her. ⑶作n时，“冲动，强烈的欲望” 搭配：
have an urge to do sth.极想做某事
eg:I have a strong urge to travel around the world. 9.abandon的用法 ⑴作v时，“遗弃，抛弃(=desert)”；“放弃(=give up)”
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eg:①A little baby was abandoned by its parents.
②In his early days he abandoned medicine for literature. ⑵作v时，“陷入，沉缅于” 搭配：
abandon oneself to…“沉缅于……”
eg:After her husband died,she abandoned herself to despair. ⑶作n时，“放任，放纵” 搭配：
with abandon放肆地，肆意地 eg:He signed cheques with abandon. 区别：abandon, desert, quit, give up
⑴abandon指完全、最终和永久地放弃，如项目、计划、主意等。 ⑵desert强调故意违背自己的义务、责任或誓言等。 ⑶quit指突然或出其不意地放弃，现一般指“停止”。 ⑷give up指无希望或因外界压力而“放弃”。
10.help out“帮助……摆脱困境或危难”既可作vt，也可作vi，后跟宾语。 短语：
can’t help but do sth.不得不做某事 can’t help(to)do sth.不能帮忙做某事 can’t help doing sth.禁不住做某事
help sb.with sth.(=help sb.(to) do sth.)帮助某人做某事 help oneself to sth.自己动手做某事 eg:①He is willing to help out.
②He helped her out when she first set foot on the country.
Section B Learning about Language
1.reflect n的用法
⑴“沉思，认真思考” 搭配：
reflect (up)on思考
eg:I have reflect on his suggestion. ⑵“反射；映出某人/某物的影像” 搭配：
be reflected in...映在……中
reflect sth.from sth.从某物(表面)反射(光、热、声等) eg:The mountains were reflected in the lake. ⑶表现(某事物的)性质，表达
eg:A man's action reflects his thoughts. 2.aware adj用法
⑴“知道的，明白的，意识到的” 搭配：
be/become aware of/that/wh-/how从句“知道；意识到” make sb.aware of/that使某人注意到 as far as I'm aware就我所知
eg:I don't think people are really aware of the importance of the problem. ⑵“有……意识的；对……有兴趣的”
eg:Young people are more environmentally aware than their parents.
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3.narrow adj“狭窄的，有限的；勉强的；狭隘的”(—vt.“使变狭窄”—vi.“变窄”—n.“狭窄部分，隘路；海峡”) 短语：
a narrow escape九死一生 a narrow victory险胜
in a narrow sense在狭义上
eg:①The road was too narrow for cars to pass. ②The shop sells only a narrow range of goods.
4.upside down adj&adv颠倒地；倒置地；上下翻转；毫无条理；乱七八糟 eg:The house was turned upside down by the burglars.
5.scare v恐吓；受惊吓—scared adj害怕的；对……感到惊慌的—scaring adj令人害怕的 作v时
搭配：scare sb.away/off把某人吓跑/吓退 scare sb.into doing sth.吓得某人做某事 作adj时 搭配：
be scared of sb./sth.害怕某人/某物
be scared of doing sth.害怕/恐惧做某事 be scared to do sth.害怕/恐惧做某事 be scared to death吓死 eg:①Don't be scared of snakes.
②A figure in the dark almost scared me to death.
Section C Using Language
二．语法知识 三．
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