Topic 2 All these problems are very serious.Section A课件（18张PPT）

课件18张PPT。 Unit 2 Topic 2 Section A


All these problems are very serious.415362Teaching aims（教学目标）
Knowledge aims:
1.Master the new words and phrases
2.Practise the students` abilities of listening, speaking and writing.
Emotional aims:
Use the proper ways to protect the environment.Work alone(自主探究)1.多糟糕的天气啊！
2.沿街而行
3.我什么也看不见。
4.听到这很抱歉。
5.太多的树
6.结果
7.阻止某人做
8.对…有害的
9.把…吹走、冲走
10.各种各样
11.形成
12.消失，灭绝1.What bad weather!
2.Walk along the street
3.I couldn`t see anything.
4.I` m sorry to hear that.
5.too many trees
6.as a result
7.stop…from doing
8.be harmful to
9.blow/ wash…away
10.types of
11.come into being
12.die out
4 A. Listen to the passage and circle the phrases you hear. become weaker

destroy the environment
disappear rapidly

on the earth
enough bamboo to eat4 B. Listen again and fill in the blanks.1. Now some kinds of animals are becoming
______ ______ _______.
2. Some animals are_____ ______ ____dying out
completely.
3. In the past, pandas lived a quiet life and had
________ ______food.
4. Humans have _____ _____ __________ the importance of protecting animals.
5. We should ______ ______ ____to protect them.do our bestin danger ofplenty ofcome to understandfewer and fewerAnswer the questions 1.What’s the weather like today ?
It’s bad. The wind is so strong . And the sand really
hurts face.
2.What causes these sandstorms ?
People have cut down too many trees.
As a result, a lot of rich land has changed into desert.
3.Do we still need to do something to protect the
environment ?
Yes, we do. Although we have built “The Green Great
Wall”, we still need to do something to protect the
environment . Group work(小组学习)
1.Talk about the meaning of the dialogue 1a.
2.Find out the difficult points.
3.Finish 1b and 1c.Class work(集体学习)Kang: 多糟糕的天气 The wind is so 强 And the sand really
伤害，打疼 my face. While I walk down the street just now,
我什么也看不到
Maria: I `m sorry to hear that. What 导致 these sandstorms?
Jane: People have 砍倒 太多的树 . 结果 , a lot of rich land has changed into desert.
Maria: That`s bad. How can that 影响 the weather?
Jane: Trees can stop the wind from blow the earth away.
Kang: And a lot of water can be saved by forests.
Jane: They can also stop the water from wash the earth away.
Kang: cut down trees 对…有害 human beings, animals and plants.
尽管 we have built “The Green Gret Wall”, we still need to do something protect the environment.What bad weatherstronghurtwas walkingI couldn`t see anythingcausescut downtoo many treesAs a resultaffectblowingwashingCuttingis harmful toAlthoughto protect
as a result, change into, do something,
stop…from, blow…away 1.People have cut down such a large number of trees that
the land _____________________desert.
2.There are fewer trees left, so the wind always _______
the earth ________.
3.Air pollution has become a serious problem, so we must
______________ to reduce it.
4.we should try our best to _________ people ________
cutting down the trees.
5.In the future, human beings can protect the trees well.
_____________, animals will live a happy life in the forest. has changed intoblows awaydo somethingstopfromAs a resultExercise(达标训练)Written practice(写作练习)
提示：环保对每个人来说都很重要。作为学生，我们可以做许多事情来保护环境。例如说：使用纸的两面；重新使用塑料袋；鼓励学生收集废纸和饮料瓶；多植树；不乱扔垃圾等等。可以分三段来写。 It is our duty to…
As a student, we can do the following things to protect the environment. First,….Second,….Last but not least,….
In short, we should do everything…Read 1a.
Memorize the useful expressions and key sentences which we learn today.
Finish Section A in your workbook.
Preview Section B.
Homework(家庭作业） Thank you !change into desert转换成，变成沙漠e.g. A lot of rich land has changed into desert because people have cut down too many trees. forests gonewash the earth away冲走many trees cut down sandstormscome into being n. 沙尘暴