参考答案：Now let’s discuss what they have in common in small groups. Remember to use some of the following expressions.
I think that ...
In my opinion ...
I believe that ...
What’s your opinion
Why do you think so
Step 2. Listening
Students are asked to read fast the requirement of Ex. 1 and to find out the listening points first. Then listen to the tape twice to complete Ex 1 .
Step 3. Talking
Imagine that your family is thinking of buying a robot. You can afford the three robots mentioned in the listening text. Please discuss which one is the best for you. Remember to discuss the advantages and disadvantages of each one. Then make your choice and give reasons.
Use the following expressions in the discussion:
I believe that ...
I think this one is better because ...
Let’s make our decision . . .
In my opinion ...
I’ve decided . . .
I don’t like this one because ...