8bunit8welcome (2).ppt

1、8B Unit8 A green World Welcome to the unit,Warming up,Did you know that all around the world, 3 to 6 billion trees are cut down each year? Have you ever planted a tree?,New words & phrases,dig vt. & vi. 挖(洞，沟等),serious adj. 认真的，严肃的,breadfruit n. 面包果,reduce vt. & vi. 减少，降低,e.g. We can reduce air poll

2、ution by riding bicycles.,turn off 关上（开关）,e.g. We can save energy by turning off the lights when we leave.,recycle vt. 回收利用，循环利用,e.g. We can protect the environment by recycling things.,wise adj. 明智的，充满智慧的,e.g. The professor is very_.,wisely adv. wisdom n.,wise,How to deal with things _ is very impo

3、rtant.,wisely,cause vt. 导致；造成 cause sth. cause sb sth.=cause sth to sb.,e.g. Human pollution causes global warming.,He caused much trouble to his parents .,He caused his parents much trouble.=,他给他的父母惹了很多麻烦.,take a shower,e.g. We can save water by taking a shorter shower.,Listen and answer,1. What is

4、 Hobo going to do? 2. Will more trees be planted this year? 3. What does Eddie like doing? 4. What will Eddie plant?,He is going to plant trees.,Yes. Trees are good for us.,He likes digging in the garden.,He will plant breadfruit trees.,Act out the comic strip,The class 1, Grade 8 students are talki

5、ng about ways to live a green life. Look at the pictures below and match them with the correct sentences.,A green life,a. We can reduce air pollution by riding bicycles.,b. We can save water by taking shorter showers.,c. We can save energy by turning off the lights when we leave a room.,d. We can pr

6、otect the environment by recycling waste.,Listen and answer,1. How did Kitty go to school in the past? 2. What about now? 3. What does Millie think she should do to live a green life?,Her father used to drive her to school.,They take the underground now.,She thinks its wise for people to choose publ

7、ic transport and ride bicycles.,4. What about Daniel? 5. What about Sandy?,He thinks we can take shorter showers to save water.,She thinks we should remember to turn off the lights when we leave a room.,Read the conversation after the recorder.,Work in groups and talk about the ways to live a green

8、life.,A: What should we do to live a green life? B: I think . C: I think . D: I think .,Free talk,Language points,1. What are you going to do? 你打算做什么？ 句中be going to do sth.意思是“打算、计划做某事”。 e.g. I am going to plant trees this Sunday. 我打算这个星期天去植树。 He is going to see a film next weekend. 他打算下个周末去看电影。,2.

9、Will more trees be planted this year? 今年更多的树将会被种植吗？ 句中will be planted 意思是“将会被种植”，“will be + 动词的过去分词”是一般将来时的被动语态。 e.g.这只大熊猫明天将被送到动物园。,The panda will be sent to the zoo tomorrow.,3. We can reduce air pollution by riding bicycles. 我们可以通过骑自行车来减少空气污染。 句中reduce air pollution 意为“减少空气污染”,reduce为动词 意为“减少，降低”

10、，反义词为increase. reduce指在数目数量上减少。 reduce to “减少到” reduce by “减少了”,我们可以把他的发言减少到三句话。,We can reduce his speech to three sentences.,因此，成本将会降低多达百分之九十。,As a result,costs will be reduced by as much as 90 percent.,e.g. 我们可以通过回收利用东西来保护环境。 我们可以通过关灯来节约能源。,We can protect the environment by recycling things.,We ca

11、n save energy by turning off the lights.,“by doing sth.”意思是“通过做事”。,4. My dad used to drive me to school. 我爸爸过去常常开车送我去学校。 句中used to do sth. 意思是“过去常常做某事”。used to表示过去的习惯动作或状 态，它可以用于各种人称，其后接动词原 形。 e.g.他们过去常常在操场上踢足球。,They used to play football on the playground.,“drive sb. + 地点副词/to + 地点名词”意为“驾车送某人去某地 ”。

12、drive to sp. = go to sp. by car意思是 “开车去某地”。 e.g. 你可以开车把我送到火车站吗？ 我的朋友们经常开车去上班。,Can you drive me to the train station?,My friends often drive to work.,= My friends often go to work by car.,5. Its wise for people to choose public transport or ride bicycles. 对人们来说选择公共交通或骑自行车是明智的。 It is + adj. + for sb.

13、+ to do sth. 意思是“对某人来说做什么事情怎么样”。常用于此句型的形容词有important, difficult, dangerous, necessary, useful, possible等，用来对 to do sth. 进行说明，此句型可以转换成To do sth. is + adj.。,e.g. It is very important for students to learn English well. 对学生们来说学好英语是很重要的。,It is + adj. + of+ sb. + to do sth.，常用于此句型的形容词有good, kind, nice, c

14、lever, wise 等，用来对sb.的性格、品质等进行说明，将这个句型中的 sb. 和 adj. 提出来可以造句为 sb. + be + adj.。,e.g. 你这样说真是太好了。,Its very kind of you to say so.,将下列句子改为被动语态。 1) His father will mend his bike. _ 2) John didnt finish the homework. _ 3) Did Mike watch the new movie yesterday? _ _,His bike will be mended by his father. The

15、 homework was not finished by John. Was the new movie watched by Mike yesterday?,4) Are the students going to plant trees tomorrow? _ _ 5)Are we going to hold the meeting tomorrow? _,Are trees going to be planted by the students tomorrow?,Is the meeting going to be held by us tomorrow? =,Is the meet

16、ing going to take place tomorrow?,根据汉语提示写单词。 1. Is he _ (严肃的)? 2. We can _ (减少) air pollution by riding bicycles. 3. He is _ (挖洞) in the garden. 4. We can _ (回收利用) old things. 5. It is _ (明智的) of you to take a map.,serious,reduce,digging,recycle,wise,Exercises,1. 洗淋浴 2. 植更多的树 3. 在花园里挖坑,take a shower plant more trees dig in the garde