高中英語新教材Unit11教案

e. .          put forward:advance,propose or suggest sth. for discussion
e.g.he is putting forward radical proposals for electoral reform. 2.aim at:intend or try to do sth. e.g.we must aim at increasing exports. 3.announce:make(sth.) known publicly e.g.they announced their engagement to the family. have they announced when the race will begin? 4.map out:present sth. in detail e.g.he mapped out his ideas on the news project.
(bb:put forward,aim at,announce,map out) cstep ⅳ listening and reading aloud t:now,i’ll play the tape for you to listen.the first time,listen and follow.the second time,listen and repeat.is that clear? ss:yes. (teacher begins to play the tape.) cstep ⅴ writing t:well,up to now,we’ve read a lot about scientific achievements.which words in the text can we use to describe scientific achievements?prepare for a few minutes.then i’ll collect them from you. suggested words: significant,outstanding,breakthrough… (then teacher deals with writing.) t:very good.now,please look at the writing part.you’ve been asked by the magazine modern science to help them choose the greatest scientific achievemen  
ever.write a short essay,telling them which achievement you have chosen and explaining why you think that it is the most important.are you clear about what to do now?           ss:yes. t:in order that you can write your essay better.you’d better read and study the tips at page 8 carefully before writing your essay.you can begin now.if time permits,i’ll ask some students to read their essay to the rest of the class.a sample essay: the publication of the detailed structure of 99% of the human genome is the culmination of one of the largest scientific undertakings in history.initiated in 1990,the human genome project involved the cooperative work of hundreds of scientists in 20 sequencing centres in countries including china,france,germany,great britain,japan and the united states. the achievement is important.not only has it given a glimpse into the extraordinary complexity of the structure of human dna but it has also demonstrated the huge potential of cooperative scientific endeavour organized on an international basis. moreover,the project’s completion has already produced medical breakthrough,scientists assert that the achievement can assist research into cancers such as leukemia,and may also extend far beyond to the other deadly diseases. cstep ⅵ summary and homework t:now let’s see what we’ve learnt in this class.first,we’ve read about some china’s significant achievements in science and technology.we know chinese history is filled with great achievements,not only in the past,but also today.science and technology makes a country richer and stronger.science and technology also makes society develop and progress.do you think so?   ss:yes. t:second,we’ve practised writing a persuasion essay.we can use some words to describe scientific achievement.moreover,we’ve learnt some useful words and phrases such as put forward,announce…after class,please practise more to develop your ability to use english.so much for today.goodbye.    ss:goodbye. cstep  ⅶ the design of the writing on the blackboard