1、Unit 3-Section B Learning about Language 重点解析重点解析【知识框图】【知识框图】参考答案：重点词汇1.Prohibition2.Prohibit3.Journalist4.Sneeze5.Teapot6.Label7.Cream8.Stretch9.rewarding10. lung重点短语1.离很远2.从远处3.导致4.寻找5.也，还6.以传统方式7.与相融洽;融入8.是.的家园【重点词汇】【重点词汇】stretch vi.延伸;延续vi.& vt. 伸展;舒展【教材原句】The Northeast Tigerand LeopardNationalp
2、arkwassetupin Jilin andHeilongjiang,with boundary stretching all the way to the border and joining withRussias wildlife reserves.东北虎豹国家公园设立在吉林和黑龙江,边界一直延伸到边境,并与俄罗斯的野生动物保护区相连。【词汇精讲】stretch vi.延伸;延续vi.& vt. 伸展;舒展You should stretch at least ten minutes before each run to prevent injuries.你应该在每次跑步前至少做十分钟
3、的伸展运动,以防受伤。He wondered about it as he stretched his body and let it expose to the sun.当他舒展身体晒太阳的时候,他在想着这件事。Bergs career as a government official stretched over twenty years.伯格的政府官员生涯持续了 20 多年。prohibit vt.(尤指以法令)禁止;阻止【教材原句】officially or legally prohibit 官方或法律上禁止【词汇精讲】prohibit vt.(尤指以法令)禁止;阻止Speaking
4、loudly in the reading-room is prohibited.在阅览室内禁止大声喧哗。Children are prohibited from buying cigarettes.禁止儿童购买香烟。【词汇拓展】The high cost of equipment prohibits many people from taking up this sport.昂贵的装备令许多人对这项运动望而却步。The government introduced a law prohibiting tobacco advertisements on TV.政府颁布法律禁止在电视上做烟草广告。
5、【重点短语】【重点短语】The problem,however,was that the old park was too small to support furtherpopulation increases.然而,问题是旧公园太小,无法承受进一步数量的增加。【句式剖析】The problem was 是主句,that 引导的是表语从句。too.to do sth 太以致不,too 后接形容词或副词,to 是动词不定式符号,后接动词原形,动词不定式表示否定意义。The boy is too young to join the army.这男孩太小,不能参军。The problem is t
6、oo difficult for me to work out.这问题太难了,我解答不了。The gate is too narrow for a car to get through.这门太窄了,小汽车开不过去。【句式拓展】(1)too.to.与 not 或 never 连用时,意为“无论也不过分,越越好”。(2)too ready/easy/eager/willing/anxious/happy.to.表示肯定,作“过于、太会”解。The girl is too careful not to do it well.这姑娘很细心,完全能干好那件事。I am too glad to get s
7、uch a gift.我很高兴能得到这样的礼物。One is never too old to learn.活到老学到老。This vast new park is nearly four times larger than the old wildlife park protectingSiberian tigers in Northeast China.这个庞大的新公园是保护东北西伯利亚虎的老野生动物园的近四倍大。【句式剖析】本句中的 protecting.是动词-ing 形式构成的短语作定语。four times larger than 是倍数的表示方法,由“倍数+比较级+than”构成
8、。The new stadium being built will be three times bigger than the present one.正在建的新体育馆将会是现在的体育馆的 3 倍大。There are twice more workers in our company than in that company.我们公司的员工是那个公司的两倍。【句式拓展】(1)倍数+as+many/much+n.+as(2)倍数+as+形容词/副词原级+as(3)倍数+形容词/副词比较级+than(4)倍数+the size/length/height/depth/width+ofThere
9、 are five times as many books in our library as in yours.我们图书馆里的书是你们图书馆里的五倍。This bridge is three times the length of that one.这座桥是那座桥的三倍长。【温馨提示】表示“两倍”时用 twice 或 double,三倍或三倍以上用“基数词+times”表达。【重点语法】【重点语法】动词-ing 形式作主语动词-ing形式由“动词 + ing形式”构成,该结构可以在句中作主语,动词-ing形式作主语多指抽象的、概念性的动作,可以是经常性的行为。Teaching childre
10、n English is very interesting.教孩子们英语很有趣。Swimming does good to our health.游泳对我们的身体有好处。1.动词-ing 形式作主语的用法(1)直接用在句首作主语Working all day made her very tired.工作了一天使她很劳累。Learning about a language is easier than using it.学习有关语言的知识比使用它容易。(2)用于“there be”结构中There is no joking about such matters.这种事开不得玩笑。There is
11、 no saying when it will stop raining.无法断定这场雨什么时候会停。(3)用 it 作形式主语,把动词-ing 形式后置,常用在下面句式中。It is no good quarrelling with him.和他争吵没有好处。Its a waste of time arguing about it.争论这事是浪费时间。It is no use telling her not to worry.告诉她不要着急也没有用。(4)动词-ing 形式的复合结构作主语当动词-ing 形式有自己的逻辑主语时,常可以在前面加上一个名词或代词的所有格,构成动名词的复合结构。T
12、oms failing in the exam made his parents worried.汤姆考试不及格使他父母着急。His coming to the party made me very excited.他来参加派对使我很兴奋。2.动词-ing 形式作主语和动词不定式作主语的区别动词-ing 形式和不定式作主语,都是说明一个内容。但是,不定式通常表示一个将来的、具体的内容;而动词-ing 形式则表示一种经常性的、习惯的或抽象的概念。Looking after children is her work.她的工作是照顾孩子。To look after children is her j
13、ob today.她今天的工作是看孩子。【随堂小测】【随堂小测】单句语法填空1.They hoped the government would remove that(prohibit) soon.2.She finally found a job which she found stimulating and(reward).3.They lay in the cliff top grass with the sea(stretch) out far below.4.I was impressed by the(vast) and breathtaking beauty of the par
14、k.参考答案：ProhibitionRewardingStretchingvastness介副词填空1.Anew middle school has been setin the village.2.The emperor walked in the streetnothing on.3.Suzhou has a banparking cars in this busy street.4.If you do not have a connectionthe database,you need to create one.5.Ill go back to China and spend the
15、holidaya traditional Chinese way.参考答案:upwithontoin完成句子1.(爬到) the top of the mountain is very difficult.2.(学习英语) is important in our modern society.3.It is a waste of time(玩电脑游戏).4.It is great fun(去游泳) in summer.5.(玛丽迟到) for class made the teacher angry.参考答案:Climbing toLearning Englishplaying computer gamesgoing to swimMarys being late
