最新Unit12TheEarth课件

1、unit 12 the earthlead-inwhat things are there in the sky?starsthe moonthe earththe sunwhat things are there on the earth?peopleanimalswaterplantsnew wordsearth地球地球part地区；区域地区；区域forest森林森林land陆地陆地ocean海洋海洋rubbish垃圾垃圾sick生病的生病的listen and saywe should stop cutting down so many trees.ms guo: look at thi

2、s picture. what is it? kitty: its the earth.ms guo: the green and brown parts are forests and land. what are the blue parts? joe: i think theyre oceans.ms guo: yes, they are. the earth was very clean and beautiful in the past, but now some parts are dirty. can we do anything to help the earth? alice

3、: yes. we should stop throwing rubbish into rivers. peter: we should stop cutting down so many trees. kitty: we should stop using plastic bags.write the words in the boxes. then talk about the earth.forestslandoceansthe earth wasand in the past, but now some partswe should stopthe earth was very cle

4、an and beautiful in the past, but now some parts are dirty. we should stop throwing rubbish into rivers, cutting down so many trees and using plastic bags.language points1. we should stop cutting down so many trees. 我们应该停止砍伐这么多的树。我们应该停止砍伐这么多的树。 stop的意思是的意思是“停止停止”，stop doing sth. 的意思是的意思是“停止做某事停止做某事”

5、，表示，表示停止正在做的事情停止正在做的事情。例句：停止讲话。老师进教室了。例句：停止讲话。老师进教室了。 stop talking. the teacher comes in the classroom.注意：注意：stop to do sth. 停下来去做某事停下来去做某事 表示停下来，去做另外一件事情。表示停下来，去做另外一件事情。例句例句：我们走了一个小时，累了。咱们停下来休息一下吧！我们走了一个小时，累了。咱们停下来休息一下吧！ we walked for an hour and tired. lets stop to have a rest.look and learnearth地

6、球地球forest森林森林ocean海洋海洋land 陆地陆地look and readwe live on the earth. the earth is a beautiful place. there are rivers, oceans, land and forests. there are many different plants and animals too.我们居住在地球上。地球是一个美丽的地方，有河流、我们居住在地球上。地球是一个美丽的地方，有河流、海洋、陆地和森林，也有很多不同的植物和动物。海洋、陆地和森林，也有很多不同的植物和动物。people, plants and

7、 animals need clean water and air. sometimes people throw rubbish into rivers and oceans. sometimes people cut down too many trees. smoke from cars and factories makes the air dirty. the earth gets sick.人、植物和动物需要洁净的水和人、植物和动物需要洁净的水和空气。有时人们向河里和海洋里空气。有时人们向河里和海洋里扔垃圾。有时人们砍伐太多的树。扔垃圾。有时人们砍伐太多的树。来自小汽车和工厂的烟使

8、空气变来自小汽车和工厂的烟使空气变脏。地球生病了。脏。地球生病了。now people work together to keep the earth clean and healthy. they pick up rubbish. they plant trees every year.现在人们共同努力使地球保持干净和健康。他们捡起垃圾。现在人们共同努力使地球保持干净和健康。他们捡起垃圾。他们每年植树。他们每年植树。they recycle glass and paper. they bring their own shopping bags and stop using plastic b

9、ags.他们回收利用玻璃和纸。他们带他们自己的购物袋并且停止他们回收利用玻璃和纸。他们带他们自己的购物袋并且停止使用塑料袋。使用塑料袋。1. why does the earth get sick?2. what do people do to keep the earth clean and healthy?answer the questions.because sometimes people throw rubbish into rivers and oceans. sometimes people cut down too many trees. smoke from cars an

10、d factories makes the air dirty.1. why does the earth get sick?people pick up rubbish and plant trees every year. they recycle glass and paper. they bring their own shopping bags and stop using plastic bags.2. what do people do to keep the earth clean and healthy?2. the earth gets sick. 地球生病了。地球生病了。

11、language points get是系动词，意思是是系动词，意思是“变得，成为变得，成为”，表示一种，表示一种变化过程，强调变化过程，强调逐渐变化逐渐变化。后面跟形容词作表语。后面跟形容词作表语。例句：夏例句：夏季季白天变得更长。白天变得更长。 the days get longer in summer.（1）turn的意思是的意思是“变得，变成变得，变成”，指在，指在颜色颜色和和性质性质等等 方面与以前的完全不同，方面与以前的完全不同，强调变化的结果强调变化的结果。 例句：叶子变黄了。例句：叶子变黄了。 the leaves turn yellow.拓展拓展：turn 和和 become

12、 （2）become的意思是的意思是“成为；变成成为；变成”，是一个中性词，是一个中性词，可用于可用于好、坏两方面好、坏两方面的变化。多指的变化。多指身份、职位，暂时性的身份、职位，暂时性的身心变化或永久性的自然变化身心变化或永久性的自然变化，它强调变化的过程，它强调变化的过程已经完已经完成成，后面可接名词或形容词。，后面可接名词或形容词。 例句：他成了一名科学家。例句：他成了一名科学家。 he becomes a scientist.ask and answerwhat should we do to save the earth? put a tick() or a cross() in

13、the box. then talk about it in groups.1 we should cut down trees.2 we should build more factories and houses.3 we should write on both sides of paper.4 we should use more plastic bags and bottles.5 we should not litter.6 we should throw rubbish into rivers.7 we should stop killing wild animals.8 we

14、should walk or ride a bike more often.s1: what should we do to save the earth?s2: we shoulds3: we shoulds4: we should stopplay roleswe should write on both sides of paper.what should we do to save the earth?we should not litter.we should stop killing wild animals.think and writethe earth was clean and beautiful.now some parts are_.we should_.we should stop_.the earth is sick!the earth was clean and beautiful.now some parts are_.we should_.we should stop_.the earth is sick!and using plastic bagsdirtyplant mo