高中英语 unit 4 section ⅲ using language精品课件 新人教版必修4

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1、Section Using Language,As the rocket rose into the air, we were pushed back into our seats because we were trying to escape the pull of the,earths gravity.随着火箭徐徐升空,我们被向后推在座位上,因 为我们正试图摆脱地球引力。,1pull n& vt.拉(力);拖;牵引力,典例 The moons pull affects the tides on the earth. 月球的引力影响地球上的潮汐。,She pulled aside the

2、window curtains. 她把窗帘拉到一旁。,拓展 pull out (火车从车站)开出,离站 pull in/into (火车)到站,进站 运用 完成句子,After being waited for half an hour, the train my parents,were on _ (进站),As he hopelessly watched, the train was _ (离,站),pulling out,pulled in,I cheered up immediately and floated weightlessly around in our spaceship

3、cabin watching the earth become smaller and,the moon larger.我立刻感到很高兴,由于失重我在太空舱里飘 来飘去,我望着(身后的)地球越来越小,而(前方的)月球越来越 大。,2cheer up 感到高兴;感到振奋;欢呼;喝彩,典例 The news cheered him up.这消息使他感到高兴。 拓展 cheer sb.up 使某人高兴起来;使某人振奋起来 cheer on sb.鼓励某人;给某人加油,运用 完成句子,The fans _ ( 感 到 兴 奋 ) when they saw,their favorite star.,S

4、am is in a loss because of having failed in the driving test.,Lets _ (使他振作起来),cheer him up,cheered up,“Oh dear,” I cried, “walking does need a bit of practice now that gravity has changed.”“天哪,”我大声说,“重力改 变了,看来走路也的确需要练一练了。”,3now that 既然;由于,典例 Now that you are busy, let me do it for you. 既然你很忙,就让我替你做吧

5、。,辨析 now that/because/as/since/for,(1)now that 和 since 都可意为“既然”,其用法基本相同,,它们的语气较弱,常把对方陈述的事实作为理由。,(2)because 语气最强,表示客观的因果关系,常用来回答,why 的提问。,(3)as 语气较弱,所表示的原因已为人们所知,或不如句,子的其他部分重要。as 引导的从句一般放在句首。,(4)for 的语气最弱,它不表示原因,只是对某一事实进行,解释说明,常放于主句之后,前面用逗号隔开。,运用 用上面所提供的辨析词填空 _ everyone is here, now lets begin. He fe

6、lt no fear, _ he was a brave man. He had to stay at home yesterday _ he was ill. _ you are tired, youd better have a rest.,Now that/Since,for,because,As,We watched, amazed as fire broke out on the outside of the spaceship as the earths gravity increased.我们惊奇地看着,随着 地球引力的增加,宇宙飞船的外层燃烧起火。 4break out 突发;

7、爆发,典例,The Anti-Japanese War broke out in 1937.,抗日战争爆发于 1937 年。 拓展 break in 打断;闯入 break into 闯入;破门而入;突然起来 break away from 脱离;挣脱;放弃 break up 驱散;拆散 break through 突破 break down (机器、车辆等)坏了;失败;摧毁,We are sorry to arrive late, but the car _. The police _ the crowd and everything became quiet again.,运用 用 bre

8、ak 构成的短语的适当形式填空 Our soldiers successfully _ the enemys,defenses.,broke away from,broke out,The dog _ its owner and ran away. More than one hundred fires _ in our city last year. Hearing the sad news, the old woman _,tears.,broke up,broke through,broke into,broke down,1But when I tried to step forwar

9、d, I found I was carried twice as far as on the earth and fell over.而当我试着向前迈步 时,我发觉我被送出很远,步子的跨度竟是在地球上的两倍, 因而我摔倒了。,点拨 “twice as far as”意为“是的两倍”,其结构为: Abe/do倍数as形容词/副词原级asB,表示“A 是 B 的多少倍”。,拓展 倍数的其他表达形式:,(1)Abe/do倍数形容词/副词的比较级thanB (2)Abe倍数the size/height/length/widthofB (3)Abe倍数what 从句,如:Asia is four t

10、imes as large as Europe.The size of Asia is four times that of Europe.Asia is four times the size of Europe. Asia is three times larger than Europe.亚洲面积是欧洲的四倍(比 欧洲大三倍)。,The production now is three times what it was ten years ago.,现在的产量是十年前的三倍。,运用 完成句子,The car runs _ (快两倍) that truck. This street is

11、_ (四倍长) of that one. This tree is _ (三倍高) that one.,three times as tall as,twice faster than,four times the length,2We watched, amazed as fire broke out on the outside of the spaceship as the earths gravity increased.我们惊奇地看着, 随着地球引力的增加,宇宙飞船的外层燃烧起火。,点拨 在本句中,amazed 是过去分词作伴随状语。与现在 分词作伴随状语不同,过去分词作状语表示分词

12、动作与逻辑主 语构成动宾关系或动作已完成,而现在分词作状语表示分词动 作与逻辑主语是主动关系或动作正在进行。如:,Aunt Wu came in, followed by her daughter.,吴阿姨走进来,(她)后面跟着她的女儿。,He sat by the roadside, begging. 他坐在路边乞讨。,运用 完成句子 “We cant go out in this weather,” Ben said, _,(向外看) of the window.,looking out,He stared at the accident scene, _ (被震惊) the traged

13、y.,shocked/astonished by,When we get closer to the moon, we shall feel its gravity,pulling us, but it will not be as strong a pull as the earths.当我 们更接近月球时,就会感到月球的引力在拉我们。但是,月球 的引力不像地球的引力那么大。 结构 not as/so.as.不如/不像,仿写 完成句子,This washing machine is _ (不如你想象的那样有用) He is _ (没有看上去那么老) Frankly, Jack is _ ( 不像,那么可靠的一个人) his brother.,not as/so old as he looks,not as/so reliable a man as,not as/so useful as you think,

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