2 At nine o'clock on Saturday morning, I'll be sitting in the front row and listening to the great Professor Willard.

Ss: The tense in the first sentence refers to the activity "discover" that will finish before the end of the century, a certain time in the future. And the tense in the second one refers to the activity "sit" that will be in progress at nine o'clock on Saturday morning, a certain time in the future.

T: You are right. The two tenses are what we are going to learn today. Now look at the screen.

Show the following on the screen.

1 the Future Perfect: will / shall have done

2 the Future Continuous: will / shall be doing

T: The construction "will / shall have done" is used when we want to express an action that has just finished before a given future time. The tense is called the Future Perfect. The construction "will / shall be doing" can be used to denote an action that is happening / going on at a given future time. Now please find more examples of the two tenses in the text on page 20.

Suggested answers to Exercise 7:

1 The seminar starts on Friday and the experts will be discussing the endless possibilities of the future.

2 By the year 2015, the clothing industry will have produced new types of material that will remain stainless no matter what you spill on them.

3 By the year 2030, development in biochemistry and medical science will have made it theoretically possible for us to live for at least 150 years.

4 By the middle of the century, computers that are millions of times smarter than us will have been developed.

5 We will be linking our brains to these computers and a huge database.

Step III Practice

Get the students to do some exercises on page 21 to consolidate the grammar knowledge.

T: Now let's first do Exercise 8 to go over the Present Perfect.