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1、Period TwoWord power & Grammar and usage.重点单词1 vt.& vi.减少2 n志愿者；vi & vt.自愿做，义务做3 vi.& vt.(吸着气)嗅，闻4 vt.分析5 vt.认识，辨认出；意识到；(正式)承认 n认出；认识6 n谜，疑问；vt.迷惑，使困惑 adj.感到迷惑的 adj.令人迷惑的7 vt.忽视；对不予理会8 vi.流汗；n.汗水 n运动衫；毛线衫.重点短语1 在某些情况下，有时候2 挨饿3 与有关4 对好奇的5 充分利用6 而不是7 回某地8 冒雪行进9 接近，靠近10 突然.重点句式1It isdone that.Since str
2、ong smells can affect the senses，volunteers were required not to eat or drink for eight hours before the experiment.因为人们认为强烈的气味会影响感觉，所以志愿者们被要求在实验开始前八个小时内不吃不喝。2that指代“同类的单数或不可数名词”One explanation is that womens sense of smell is better developed than ，and is linked to recognizing the smell of babies.种
3、解释是女性的嗅觉比男性的发达，而且这和识别婴儿的体味有关系。重点词汇1In some cases，different parts of speech (usually a noun and a verb) have the same spelling but different meanings.在某些情况下，不同的词性(通常是名词和动词)有相同的拼写但不同的含义。归纳拓展in some cases在某些情况下，有时候in any case无论如何，总之in case在情况下，万一；免得，以防(万一)in case of在的情况下，万一in the case of.关于，就而言in this/
4、that case假使这样/那样的话in no case决不(置于句首，引起倒装)as is often the case (with.) 通常就是这样；是常有的事语境助记(1)In some cases standards have improved.在某些情况下标准已经提高了。(2)Larry told her that he had already put out the fire and she should not move in case she injured her neck.(2016全国)Larry告诉她他已经把火扑灭，她应该待着不动以防伤着脖子。(3)Please inf
5、orm me in advance in case of any change.万一有什么变化，请提前通知我。(4)As is often the case with him，he was fined for speeding.他因超速而被罚款，这对他而言是常有的事。题组训练(1)在任何情况下你都不能离开岗位。In no case your post.(2)Honesty is generally considered the best policy you are stopped by the police at the accident spot.(2016邗江中学高一期中)Ain cas
6、eBeven thoughCso that Donly if2Poor people often have to go hungry because they cannot afford the increase.穷人经常得挨饿，因为他们负担不起这种增长。归纳拓展go hungry表示“挨饿”。go作连系动词，意为“变得”，后面多跟形容词作表语，指由好到坏的变化。其常用搭配有：go wrong/bad/mad/blind/deaf出毛病了/变坏/发疯/变瞎/变聋。语境助记(1)The washing machine has gone wrong.洗衣机出毛病了。(2)Food goes bad
7、 easily in summer.夏天食物容易变质。(3)His face went red with anger.他气得满脸通红。题组训练(1)你嫁给了他，要挨饿的。If you marry him，youll .(2)On hearing the news of the mine accident，she pale.Agot BchangedCwent Dappeared3The possibility that pleasant smells might reduce pain has recently been suggested by new research.好闻的气味会减弱疼痛
8、的可能性在近期的新研究中得到了证实。归纳拓展reduce vt.& vi.减少，缩小(尺寸、数量、价格等)reduce.to.把减少到reduce.by.减少，缩小(程度) be reduced to.沦落为；迫使语境助记(1)One of the most effective ways to reduce stress is to talk about feelings with someone you trust.减少压力最有效的方法之一，是与信任的人谈谈你的感受。(2)She reduced her weight by 6 kilos to 30 kilos.她把体重减到了30公斤，减轻
9、了6公斤。(3)For some time he was reduced to begging.有一段时间他沦落到了乞讨的地步。题组训练(1)用适当的介词填空It is proper that housing price is reduced 10%.They were reduced extreme poverty.(2)The population of this city，forty percent of which ， 15% in the last three years.Aare Germans；has risen byBare Germen；has fallen byCis Ge
10、rman；have increased toDis Germans；has been reduced by(3)The cars give off a great deal of waste gas into the streets.Yes.But Im sure something must be done to air pollution.Areduce BremoveCcollect Dincrease4.，volunteers were required not to eat or drink for eight hours before the experiment.，志愿者们被要求
11、在试验开始前八个小时内不吃不喝。归纳拓展(1)volunteer n志愿者；vt.& vi.自愿做，义务做volunteer sth.自愿提供，自愿给予volunteer to do sth.自愿做某事volunteer for自愿参加volunteer as/to be自愿成为(2)voluntary adj.志愿的；自愿的，主动的语境助记(1)She volunteered some information.她主动提供了一些信息。(2)Two men volunteered to search for the missing climber.两个人自告奋勇去寻找那位失踪的登山者。(3)Wh
12、en she retired，she did a lot of voluntary work for the Red Cross.她退休后为红十字会做了大量的志愿工作。题组训练(1)用适当的介词填空He volunteered a teacher in Tibet.Why do you want to volunteer our organization?(2)他自愿服务充当司机。He volunteered .5One explanation is that womens sense of smell is better developed than that of men，and is l
13、inked to recognizing the smell of babies.一种解释是女性的嗅觉比男性的发达，而且这和识别婴儿的体味有关系。归纳拓展(1)recognize vt.认识；辨认出；意识到；(正式)承认recognize.as/to be.承认/公认是 recognize that.认识到/承认 It is (generally) recognized that.人们公认 (2)recognition n认出；认识beyond recognition认不出来语境助记(1)I found it honored that he still recognized me after all these years.过了这么多年他还认得我，使我觉得荣幸。(2)We recognized that Kurt wasnt just trying to make a sale.(2016江苏)我们认识到库尔特不仅仅是在做销售。(3)It is recognized that Jane is the most int
