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1、Section Warming Up & ReadingLanguage Points,速效提能演练,Unit 1,重点难点探究,Section ,重点难点探究,1However，according to a widely accepted theory，the universe began with a “Big Bang” that threw matter in all directions. 然而，一种普遍为人们所接受的理论是：宇宙起源于一次“大爆炸”，这次大爆炸将物质投射到四面八方。 品味经典 When the police arrived，the crowd ran away in
2、 all directions. 警察一到，人群就向四面八方跑开了。,自我探究 in all directions in every direction朝四面八方。 归纳拓展 (1)direction n方向；指导；(通常作复数)指示，命令，说明书 (2)a sense of direction方向感 in/from the direction of.朝着/来自方向 under the direction of sb.under ones direction 在某人的指导下 He has a good sense of direction. 他的方向感很好。,牛刀小试 完成句子 (1)汤姆朝一
3、个方向走，哈里则朝另一个方向走。 Tom went off _ and Harry _. 答案：in one direction；in another (2)他在我的指导下做这件事。 He did the work _. 答案：under my direction,(3)请遵照此药的使用说明。 _ the use of the medicine. 答案：Follow the directions for (4)我看到一个妇女在黑暗中正冲我跑来，我还未来得及认出她，她就从她来的方向跑回去了。 I saw a woman running toward me in the dark.Before I
4、 could recognize who she was，she had run back in the direction _. 答案：from which she had come,2They were in time to produce carbon，nitrogen，water vapour and other gases，which were to make the earths atmosphere. 最终产生了碳、氮气、水蒸气和其他多种气体，从而形成了地球的大气层。 品味经典 They caught the bus in time. 他们及时赶上了汽车。 The storm w
5、as in time to stop before the sports meeting. 暴雨终于在运动会开始前停了下来。 If you keep on，you will succeed in time. 如果坚持下去，你们总有一天会成功的。,自我探究 in time 及时；终于；迟早，总有一天。 归纳拓展 ahead of time 提前，提早 all the time 一直；始终 at a time 一次，每次；在时候 atno time 决不 at one time 一度；同时 at the same time 同时；尽管如此,at times 有时；偶尔 for the time b
6、eing 暂时 from time to time 不时地，间或 in no time 立即，立刻 on time 按时，准时 kill time 消遣；消磨时光 take ones time 不着急；慢慢来,牛刀小试 选用上述词组完成句子 (1)With five hungry children seated around the table，the food，disappeared _. (2)Its better to _ at this job than to hurry and make mistakes. (3)She would surely lose her place if
7、she were not _ for the meeting that day. 答案：(1)in no time (2)take your time (3)in time,3What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. 很多科学家相信，由于地球上长期有水的存在，使地球得以把有害气体和酸性物质溶解在海洋里。 品味经典 Your smoking c
8、an be harmful to the health of your children. 你吸烟会危及孩子的健康。 It is harmful to your heath to drink too much. 过量饮酒对你的身体有害。,自我探究 harmful adj. 有害的；造成伤害的。 归纳拓展 be harmful to sb./sth. 对某人/某物有害 harm n.& vt. 伤害，损害 do harm to 对有害,牛刀小试 完成句子 (2011年杭州高一检测改编)不要做任何对自然有害的事，否则我们人类就会过得不快乐。 Please dont _ our nature，or
9、we humans will _ each other. 答案：do anything harmful to；have no fun with,4These animals were different from all life forms in the past，because they gave birth to young baby animals and produced milk to feed them. 这些动物不同于以往所有的生命形式，因为它们能从体内生产出幼仔并给幼仔哺乳。 品味经典 Giving birth to a baby is a dreadful thing fo
10、r the poor. 生儿育女对于穷人来说是一件可怕的事情。 This event gave birth to peace movement. 这次事件引发了和平运动。,自我探究 give birth to(sb./sth.)产生；分娩。 牛刀小试 完成句子 (1)信不信由你，那位老妇人生了6个孩子，但没有一个活下来。 Believe it or not，the old lady _，but none survived. (2)对历史的研究孕育了社会科学。 _ the study of history_ the social sciences. 答案：(1)gave birth to 6 b
11、abies (2)It was；that gave birth to,5Thus they have，in their turn，become the most important animals on the planet. 于是，它们接着成为这个星球上最重要的动物。 品味经典 This week I am to do the housework in my turn. 这一周该我做家务了。 When it is in my turn，I am too excited to speak. 当轮到我时，我激动得都说不出话来了。,自我探究 in ones turn 轮到某人；接着。,归纳拓展 i
12、n turn 依次，轮流；反之，反过来 by turns 轮流；交替地 take turns to do sth. 轮流做某事 It is ones turn to do sth.轮到某人做某事,They answered the teachers questions in turn. 他们依次回答老师的问题。 We did the work by turns. 我们是轮流做这项工作的。 It is your turn to read the text. 该轮到你读课文了。 We take turns to do the housework. 我们轮流做家务。,牛刀小试 完成句子 (1)我们是
13、轮流做这项工作的。 We did the work _. (2)那些女孩儿逐一报出自己的名字。 The girls called out their names _. (3)然后，他们接着去营救困在大火中的人。 Then，they _ to save the people who were trapped in the big fire. 答案：(1)by turns (2)in turn (3)were in their turn,6They are putting too much carbon dioxide into the atmosphere，which prevents heat
14、 from escaping from the earth into space. 它们把过多的二氧化碳排放到大气层中，这使地球上的热不能释放到太空中去。 品味经典 We must prevent them from making trouble. 我们必须防止他们捣乱。 There was nothing to prevent her from doing so. 什么也不能阻止她这样做。,自我探究 prevent sb.from doing sth.使(某人)不做某事，阻止(某人)做某事，有时from可省略，而构成prevent sb.doing sth.结构。,归纳拓展 阻止某人做某事
15、prevent宾语(from) doing stop宾语(from) doing keep宾语from doing 注意：在主动语态中prevent与stop可省去from，而在被动语态里from均不可省去。keep sb./sth.from 中的from不能省略。,牛刀小试 完成句子 (1)下雨使我们不能踢足球了。 The rain _. (2)人们采取行动，防止了环境的恶化。 People took measures and this _. 答案：(1)prevented us from playing football (2)prevented the environment from getting worse,7How life began on earth is one of the biggest puzzles that scientists found hard to solve. 地球上生命的起源是科学家们难以解决的最大疑惑之一。 品味经典 Its quite a puzzle to us why he did that. 他为何那样做，我们完全搞不懂。 The question puzzled them. 那个问题把他们难住了。,
