英语人教版九年级全册Im trying to save the earth.docx

第2课时 Section A 3a3b一、听录音或根据音标朗读词汇表中P.99P.100：sharktransportation共14个词。并在课文中划出来。 二、根据汉语写出下列短语，并在课文中划出来。1听说10不再 2鱼翅11不仅.而且.3一整条鲨鱼12食物链 4一碗13在海洋生态系统中5捕捉鲨鱼14在过去的二三十年里6切除15更新法律法规7扔回到海洋16科学的研究8没有了鱼鳍17到目前为止9对.有害 18对健康有益自主探究1. This method is not only cruel, but also harmful to the environment. 这种方法不仅残酷，而且对环境是有害的。【解读】not only. but （also）. 意思为不仅.而且.，在句中常用来连接两个对等的成分，also可以省略。notonly.but(also).用来连接两个主语时，谓语动词的单、复数遵循“就近原则”，即和but(also)后的名词或代词的数一致。同时，notonly.but(also).连接两个分句，当notonly位于句首，前一个分句常用倒装来表示强调，而but(also)后的分句仍用陈述语序。【举例】ShespeaksEnglishnotonlyinclassbut(also)athome.她在课堂上和家里都说英语。Notonlyherparents butalso she is fondofwatchingfootballmatches. 不仅她的父母，而且她都喜欢看足球比赛。Not only does the sun give us light but also it gives us heat.太阳不仅给我们光还给予我们热。【练习】选择题(1) Not only but repair it. A. can he; he can B.he can; can he C.can he ; can he D.he can; he can(2) Not only Li Ming but I students. A. is B. are C. am D. be2. So far, no scientific studies have shown that sharks fins are good for health, so why eat them? 到目前为止，没有科学的研究已显示鱼翅对健康是有益的，所以为什么要吃它们呢？【解读1】此句中用到的是现在完成时态，其结构为：主语 + have/has + done. 此句型中的have/has为助动词，其否定形式为havent/ hasnt. 常与其连用的时间状语有：so far; in the last/past few years; since then; for some years.【举例】I have taught English here since then. 自从那时起我就一直在这教英语。Ihaventheardfromherthesedays.这些日子我没有收到她的信。Theyhavebeenawayfortwoyears.他们离开已经两年了。 The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years. 在过去的20到30年里一些种类的鲨鱼数量已经减少了90%多。 【解读2】be good for 意思为对.有好处，有益。常与其混淆的结构有：be good at（擅长于.）; be good with( 善于与.打交道、对.有办法); be good to(对.友好)【举例】Running is good for our body. 跑步对我们的身体有好处。 I am good at running. 我擅长于跑步。 Tony is good with his classmates, so they all like him. Tony 善于和他的同学打交道，所以他们都很喜欢他。 We like our English teacher, because she is good to us. 我们喜欢我们的英语老师，因为她对我们很友好。【练习】选择题(1) The famous writer _ one new book in the past two year.A. iswritingB. waswriting C. wrote D. has written(2)Our country _ a lot so far.Yes. I hope it will be even _.A. haschanged；wellB. changed；goodC. haschanged；betterD. changed；better (3) TheSmiths_inChinafor8years.A.haslivedB.livedC.havebeen D.live(4) My friend was good me when I was ill. She told me that eating more vegetables is good my health.A. with; for