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Unit22 Environmental Protection Language StudyUnit 22 Environmental Protection Lesson3 Natural DisastersLanguage StudyStep 1:Learning Aims:(学习目标)To translate the text.To learn some important phrases and sentence patterns. Important and Difficult Points:(重难点)To master the usages of some important words ,phrases and sentence patterns.Step2: Check preview（检查预习）Check if students have remembered important words and phrases.Step3:Self-study and Cooperating （自主学习、合作探究）重点句式探究1.The last few years have seen environmental disasters on a grand scale, and experts are predicting far worse to come.在过去的几年里,许多大规模的自然灾害发生了,专家预测形势将更为严峻。 本句的主语是the last few years,谓语动词是have seen。像这样以时间、地点等名词作主语的句子,常用see, find, witness等动词作谓语,此时构成动词拟人化的用法。1949 saw the founding of the Peoples Republic of China.1949年中华人民共和国成立了。Rome witnessed many great historic events.在罗马城发生了许多重大的历史事件。20世纪发生了两次世界大战。_单句填空Recent years (see) rapid change of my hometown. Yes, I could hardly recognize it when I arrived yesterday.2.Storms have been getting worse everywhere too, with a growing number of hurricanes hitting the US, and Central America.随着飓风不断地袭击美国和美洲中部,暴风雨给各地带来的灾害也变得更加严重。 本句使用了现在完成进行时。现在完成进行时是由“have / has+been+现在分词”构成的,可以表示从过去某时开始一直延续到说话时还在进行,或可能还要继续下去的动作,还可以表示从过去某时开始,一直延续到说话时刻,可能刚刚结束的动作。She has been burning the midnight oil to prepare for GRE.她最近在熬夜准备GRE考试。The old man has been repairing cars for thirty years.老人修车修了三十年了。What happened to you? Have you been crying?你怎么了?你是不是一直在哭?我在这儿已经待了10年了。 _.单句填空(1)Hi, David. You look so tired. Whats going on? I (clean) the classroom for 2 hours. (2)Are you busy recently, Ken? Yes, I (prepare) for the coming speech contest. It will be held next week. 3.Who are most likely to be the victims of natural disasters?谁有可能成为自然灾害的受害者呢? “be likely to do”为固定用法,意为“极有可能”。likely还可以用于句型“It is likely that.”句型中,意为“很可能”,it为形式主语,代替that引导的主语从句,避免句子因头重脚轻而失衡。 明天有可能要下雨。(一句多译) _probably, possibly, likely, perhaps和maybe的用法区别:likely是常用词,指从表面痕迹来看很有可能。主语既可以是人也可以是物。可以说“sb / sth be likely to do”,但是不可以说“It is likely for sb to do”。possible强调客观上有可能,但含有实际上可能性很小的意思。主语不可以是人,只能是用it 作形式主语。构成“It is possible for sb to do sth”。 probable 语气比possible强,常用来指有根据、合乎情理、值得相信的事,可能性最大,是most likely的意思,含有“很有可能;十有八九”的意思。其主语或所修饰词只能是物,此外,该词也不能用人作主语或构成复合宾语。表示“某人可能做某事”,只能用It is probable that sb.或It is probable for sb to do sth句型。perhaps 作“或许”解,有“也许如此,也许不如此”的意味。maybe也作“也许”解,同perhaps意思接近,但比perhaps更为普通而又不那么庄重。perhaps是英国英语,maybe是美国英语。.同义句转换(1)It is likely that our group will win the first prize in the contest. Our group win the first prize in the contest. (2)He was likely to fail in the exam because he was absent-minded. It is he failed in the exam because he was absent-minded. Step5: Doing exercises（课堂检测）.翻译句子1.那些士兵配有枪。(arm) 2.大雨引起洪水。(result in) 3.电话是一种通讯工具。(means) 4.她含着眼泪说了声再见。(with复合结构) 5.昨晚有一场激烈的比赛。(see)Step6: Summaryand homework（小结和作业）1.Memorize words and phrases in lesson3 . 2. Review the text of Lesson3.答案合作探究重点句式探究1.The twentieth century saw two World Wars. have been2.I have been living here for 10 years.(1) have been cleaning(2)have been preparing3.It is likely to rain tomorrow.或It is likely that it will rain tomorrow.(1)is likely to(2)possible / probable / likely课堂检测.1.The soldiers were armed with guns.2.Heavy rains resulted in floods.3.The telephone is a means of communication.4.She said good-bye with tears in her eyes.5.Last night saw a fierce match.- 3 -
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