高一英語必修3 Unit 4教案
2. intensive reading
(1) ask ss to read the text carefully and explain what the “black hole” is according to the text. then have them write it down.
(2) ask ss to read the form on p67 and which of the old ideas about the “black hole” is wrong.
suggested answers:
the fifth old idea is wrong, because objects can be thrown far from the “black hole” by the energy in the “black hole”. other old ideas are right.
(3) ask ss to improve their writings about the “black hole” according to the form on p67 and choose some ss to read old their writings.
step 2. speaking task (workbook)
1. divide ss into three groups and ask each group to think of a question which they want to ask li yanping most. then write the three questions three groups have presented on the blackboard.
possible questions:
can we see “black holes” with our eyes?
if you can't see a "black hole", how did you know you had got close to it?
have our scientists found out whether "black holes" will do harm to the human beings or not?
what will happened if we get close to a “black hole”?
what was the most unexpected thing you found out about “black holes”?
what was the most frightening thing that happened to you on this journey?
possible answers:
no, we can't.
you only know you are close to a black hole by seeing things disappear into what appears to be an empty space. the black hole can't be seen.
so far we haven't found out they can cause damage to the earth or human beings.
all objects must go into the "black hole" when they are caught by its gravity.
the most unexpected thing is that the "black holes" threw out material as well as swallowing objects.
the most frightening experience : when the gravity of the "black hole" was pulling us slowly into its "mouth", and then the spaceship moved around the hole and began to go faster and faster into it; i was terrified because i thought we would be swallowed by the "hole".
2. ask ss to read the three questions of speaking task on p67 and discuss all the six questions.
3. ask ss to work in pairs and make an interview. one student asks the questions and the other answers. then change roles. they can begin the dialogue like this.
s1: good morning, mr li.