T: It seems that you have master the usage of the -ing form as attribute. Now, let's look at the Exercise1 on Page 21. What does it tell us to do?

　　S4: It tells us to find the sentences in the reading passage where the -ing form is used as the object complement.

　　T: Can you find some?

　　S4: Yes. In fact we have done this work in the last period. But I don't understand what object complement means.

　　T: This is a good question. The object complement is used to explain what object has done, or doing, or to do. Or we can think that the speaker wants to express his/her meaning more completely. Of course, in this unit we only study the -ing form as the object complement. The structure of the sentence with an object complement is: (Show the following on the screen.)

　　Subject + Predicate + Object + Object complement

　　Are you clear now?

　　S4: Yes.

　　T: Now, let's look at Exercise 2. Have you done this?

　　Ss: Yes.

　　T: Ok, now let's check the answers for this Exercise. Who would like to say your answers out?

　　Teacher can ask 9 students to read the 9 complete sentences to check the answers. If there are some questions, teacher should give students some explanations, and make some changes if there are some incorrect answers.

　　T: Well, can you analyze the part of speech of the -ing form in the 9 sentences?

　　S5: In the first three sentences the -ing form is used as object complement.

　　T: Right. Have you found the same structure in other sentences?

　　S5: Yes. In the fifth, the sixth, the seventh, the eighth and the ninth sentence, the -ing form is also used as the object complement.

　　T: How about the rest?

　　S5: In the fourth sentence, the -ing form is used as the attribute.

　　T: Quite right. Now I think we can go on to do Exercise 3. Let me see if you have finished this Exercise.

　　Teacher walks around, the students are asked to check their answers.

T: I'm very glad that most of you have finished the exercise. But some of you need to be more diligent. Next time I'll specially check your answers. Well, the structure of the sentences has been given. Can you tell me the