Unit12 Fact and fantasy

teacher plays the tape for the students to listen. then give the students a few minutes to fill in the chart and make a sketch of the animal as they saw. when they finish, teacher checks their answers and picks out one sketch of the animal drawn vividly by them as an example.
go on with the listening practice. listen to the tape again and then finish exercise 2. before listening to the tape, the ss need to go through the questions and know what to do.
(teacher begins to play the tape for the second time. during this lime, teacher may pause for the students to write down the answers to the ques¬tions. at last, check the answers with the whole class. )
step 5   speaking
work in pairs to create dialogues using the expressions written on the black¬board.
(teacher writes the following on the blackboard.)
i believe……
i suppose……
i doubt……
i'm sure that……
i’m (not) certain……
i can't imagine……
it could be……
it's likely……
it would like……
sample dialogues;
space travel
a: i don't believe people can travel in space.
b: why not? more than 100 years ago nobody thought it was possible for people to travel in the sky by plane from one place to another.
a: in my opinion, space travel is more than a master of time to us, and also a matter of technology. b: i agree with you. but we'll be able to develop. i believe with the develop¬ment of science and
 technology, space travel is not a dream, and the day is on the way.
life in 3098
a: i doubt whether there is any life on earth in the future.
b: come on. what do you mean?
a; i mean that as the result of human beings' role in nature and society, peo¬ple at present are facing some terrible disasters, like wars, the environmental pollution, the excessively   developed resources.
b: yes. these disasters will lead to hu¬man beings' disappearing in 3098. what should we do?
a: i think we should take some measures to save ourselves from disasters, such as planting more trees, saving our resources, maintaining peace all over the world……
b: what you said is quite right.
young forever
a: do you think there will be a time when we can cure all diseases?
b: i suppose that is only a happy wish for us. because when old diseases are gone, new diseases will occur. every¬thing in the world is changing all the time.
a; doctors may find a way to keep us young forever. medicine is also develo¬ping.
b: yes. let's expect that day to come to¬gether.
creatures from outer space
a: do you believe there are some crea¬tures from outer space?