convenient.

T: A wonderful idea. What else?

S: My invention is a device that translates Chinese into English. It is very important for people who come from different countries to communicate with each other. It is made up of a 3-inch long wireless microphone that is fastened to a tie and sends out sounds to a small console that is connected to a database. The console can translate Chinese into English, so by that time Chinese can communicate with foreigners who know English fluently.

T: Excellent! I hope that you must study hard and try to realize your dreams. Maybe some day some of you will be inventors.

Step II Grammar

Get the students to learn to use the Future Perfect and the Future Continuous correctly.

T: We have learned some ways to express the future. They include "will / shall do", "be going to", "be to do", Present progressive "be doing" and Simple present "do". Now look at two sentences with the future tenses on the screen. In which of these sentences do we emphasize that the underlined activity must be finished before the other one happens?

Show the following on the screen.

1 When you get home on Friday, you'll receive good news.

2 After you've done the shopping, you'll have a pleasant surprise.

Ss: In the second sentence, we emphasize that the underlined activity must be finished before the other one happens.

T: Good. Let's look at another two sentences on the screen and pay attention to the parts in bold. Then point out which of the tenses refers to something that will finish before a certain time in the future and which refers to something that will be in progress at a certain time in the future.

Show the following on the screen.

1 By the end of the century, we will have discovered other places in our solar system ...