Saving the earth（The First Period）
a：ok.all that you said are reasonable.i believe that we must try our best to
find a better way to use the coal.meanwhile ,we must make sure that the factories which burn the coal take measures to stop polluting the environment.
step v summary and homework
t：well done.after class，please write down your dialogue in your exercise book.today.we’ve talked about our environment.we know that there are some big problems facing our earth.we must try to do what we can to protect the earth.besides.we’ve practiced supporting an opinion.who can come to the blackboard and write down the useful expressions we’ve practiced just now?
(a student writes them down on the blackboard.if this student can't write all of them，the teacher may ask another student to write the other expressions.)
t: very good.after class, you need practise more to master them better。that’s a11 for today.see you tomorrow!
ss：se you tomorrow!
step vi the design of the writing on the blackboard
unit 9 saving the earth
the first period
useful expressions：
we must make sure that…
it’s clear that…
i believe that we must…
i’m all for…
if nothing is done…，then…
i can't imagine that…
sure/certainly/absolutely.
it would be better if we…
is there a better way to…
step ⅶ record after teaching