高中英语Unit3ProtectingourselvesPeriodTwoWordPowerGrammarandUsage课件牛津译林版选修精品PPT

1、Period Two Word Power & Grammar and Usage高中英语选修10译林版.Words：1_vt. & vi.(使)结束；下结论_ n结论2_ vi. & vt.歧视；区分；辨别3_adj.额外的_ n增加，附加_v加concludeconclusiondiscriminateadditionaladditionadd.Phrases：1_离开，远离2_由于，因为3_在一些情况下4_不再5_放弃6_熬夜，不睡觉7_终结，结束stay away fromin thatin some casesno longergive upstay up lateto conclu

2、de文章的行文一篇课文应当以一种让读者易于理解其观点的方式进行写作。为了让课文的结构具有逻辑性，课文中应当包括以下几点：1标题标题不应太长，应简单明了(如Aids today)。2起始段起始段应含有主题陈述，一般为第一句。When discussing the problem of Aids，we use a lot of technical and scientific terms on this website.有时，主题句置于旨在引起读者注意的一个引子之后。在某些情形下，起始段根本就不需要一个主题句。例如，在解释一系列事物或关于主要观点的细节都很清楚的起始段中，就可以不需要主题句。Aid

3、s today中的第一段就属于后一种情况，该段陈述了Ajani和他妹妹的情况以及艾滋病对他们家庭的影响。跟其他段落一样，在起始段中，主题句之后应有支撑句。起始段应能捕捉读者的注意，引起其阅读整个篇章的兴趣。我们可以通过列出有趣的事实、提出问题或仅提供一部分细节来吸引读者的注意。下面这种也是一种引子：In an African village，elevenyearold Ajani hears a faroff scream as he washes his little sister in a bath that leaks water.3主体段落一篇文章的正文部分一般由几个段落组成。每一段通

4、常也包括三个部分：主题句、论据、结论。这个主题句同样可放在该段的段首或段尾，用来引出该段的话题或总结该段。附属句一定围绕主题句展开。结尾句通常是对该段的一个总结，但有时也用来衔接下文。4结论段结论段应当是最终的主题句(或是预测)，结论段也可能谈及起始段提到的例子。如：Although Aids has left a scar on Ajani and his sister，they are lucky.Their grandfather is taking care of them，and because their mother had access to prescription Aids

5、 medications during pregnancy，they did not get HIV from her.即时跟踪.认真阅读下面的短文，为25段每一段找出主旨大意；同时为全文拟一个合适的标题ATears attract help from others and enable us to understand our emotions better.BCrying also has many health advantages.CNot crying can be bad for physical health.DCrying seems important to our emot

6、ional health.When I was small and my grandmother died，I couldnt understand why I had no tears.But that night when my dad tried to cheer me up，my laugh turned into crying.So it has no surprise to learn that researchers believe crying and laughing come from the same part of the brain.Just as laughing

7、has many health advantages，scientists are discovering that crying does do，too.Whatever it takes for us to reduce pressure is important to our emotional health，and crying seems to work well.One study found that 85 percent of women and 73 percent of men report feeling better after crying.Besides，tears

8、 attract help from other people.Researchers agree that when we cry，people around us become kinder and friendlier and they are more ready to provide support and comfort.Tears also enable us to understand our emotions better；sometimes we dont even know were very sad until we cry.We learn about our emo

9、tions through crying，and then we can deal with them.Just as crying can be healthy，not cryingholding back tears of anger，pain or sufferingcan be bad for physical health.Studies have shown that too much control of emotions can lead to high blood pressure，heart problems and some other illnesses.If you

10、have a health problem，doctors will certainly not ask you to cry.But when you feel like crying，dont fight it.Its a naturaland healthyemotional response.1The main idea of each paragraph：Paragraph 2_Paragraph 3_Paragraph 4_Paragraph 5_2The best title for the passage：_答案1.BDAC2.The functions of tears.阅读

11、理解 Think about the different ways that people use the wind.You can use it to fly a kite or to sail a boat.Wind is one of our cleanest and richest power sources(来源)，as well as one of the oldest.Evidence shows that windmills(风车) began to be used in ancient Iran back in the seventh century BC.They were

12、 first introduced to Europe during the 1100s，when armies returned from the Middle East with knowledge of using wind power. For many centuries，people used windmills to grind(磨碎)wheat into flour or pump water from deep underground.When electricity was discovered in the late 1800s, people living in rem

13、ote areas began to use them to produce electricity.This allowed them to have electric lights and radio.However，by the 1940s when electricity was available to people in almost all areas of the United States，windmills were rarely used. During the 1970s，people started becoming concerned about the pollu

14、tion that is created when coal and gas areburned to produce electricity.People also realized that the supply of coal and gas would not last forever.Then，wind was rediscovered，though it means higher costs.Today，there is a global movement to supply more and more of our electricity through the use of wind. What would the author probably discuss in the paragrap