外研版必修3Module4學案

t: it was really terrible. thank you. now i think all of you have known about something of sandstorm. the sandstorm is terrible and harmful. we should work hard to protect our environment.
step iii  pronunciation and function on p36
listen to the tape and ask students to underline the words stressed and conclude when and where the word will be stressed. then ask students to practice activity 1&2. listen again to check if the stress is right. ask students to complete the sentences in ex.3 using expressions from ex.1&2.
step iv  speaking1 &2 on p37
t: suppose you are a citizen. there is a sandstorm in your city. a reporter wants to interview you about this sandstorm. make a dialogue about your interview with your partner.
s1: good afternoon sir, i am a reporter of local television station. may i ask you some questions about the sandstorm happened in the morning?
s2: ok.
s1: when the sandstorm happened, what were you doing?
s2: i was cycling on the road.
s1: before the sandstorm coming, did you know it was the sandstorm? or were there some signs of the coming sandstorm?
s2: yes. i learn some sandstorm signs from tv. so i tried hard to ride, but the wind was so strong.
s1: can you tell me some signs of that sandstorm?
s2: first, the wind was becoming stronger and stronger, it looked like the rain was coming. i can hardly ride my bike. the dust on the ground was whirled into the sky. and the sky was turned into yellow. the dust became more and more. i can hardly open my eyes. i knew it would be a sandstorm.
s1: it was terrible. can you give us some ideas to prevent the sandstorm?
s2: from television, we can see most of the sandstorms are caused by human. instead of cutting down trees and digging grass we should plant more trees and grasses.
s1: i agree with you. i think after this sandstorm most of people will be waken. thank you.
t: well done. thank you. now we have known most of the sandstorms have been caused by the destroyed environment. are there any other things that are bad for the environment?
ss: yes. for example, coal.
t: in what way?
ss: it gets off lots of smoke and pollutes the air.
t: you’re right.
ss: plastic. in our daily life, people use many plastic bags and throw them around. when there is wind, the plastic bags thrown will fly everywhere.
ss: in canteen many students use plastic bags to hold their meal and throw them away then. i think we should not use them first and set a modal.
ss: like refrigerator, more and more cars have come into families. they give out much chemical smoke, especially in cities. it is bad for our health.