Step 1 Revision
1 Check the homework.
2 Revise the story. See if the Ss can do this with books closed. You can use the questions in Wb Lesson 18， Ex. 1 to guide the Ss. Make notes on the Bb or， if possible， draw some pictures showing the sequence of the story.
Step 2 Read and answer
SB page 19， Part 1. Wb Lesson 19， Ex. 2. Call out one student and suppose he is Li Lei. Ask the first two questions， then let the Ss ask and answer in groups.
You could ask a group to come out and perform their dialogue in front of the class.
The answers may be： 1 Yes， I did. 2 The man's motorbike hit the bag. 3 When school was over. 4 Yes， very. 5 Around the corner near the school. 6 From a truck. But the driver didn't know that. He drove away. 7 Yes， some of my classmates.
Step 3 Practice
SB page 19， Part 2. Do the first sentence with the Ss， making sure they understand what to do. Then let them work alone， writing out the passage in their exercise books. The Ss can check their answers in pairs， then with the whole class. The answers should be：1B，2B，3B，4B，5A，6A，7B，8A，9A/B，10 B，11A，12A.
Step 4 Listening
SB page 19， Part 3. Listening Cassette
Lesson 19. Wb Ex. 1. Play the tape through once.
Give the Ss a few moments to write down their answers， then play the tape again. Ss check their answers in pairs， then with the whole class. If there are any arguments， play the tape again.
Listening text
LI LEI： Jim， what were you and your family doing last Sunday evening?
JIM： Last Sunday evening? Let me see. Oh， my sister Kate was washing her hair.
LI LEI ： What about you?
JIM： I was doing my homework.
LI LEI： And your parents?
JIM： My parents? I can't remember! Oh yes， now I remember. They were watching TV.
Step 5 Presentation
Ask a student to come and perform an action at the front of the class (e.g. sweeping the floor )。 Ask What is he /she doing? Help the Ss to answer. Then invite another student to come and perform a different activity (e.g. cleaning the Bb ) at the same time as the first student.
Tell the Ss： A is sweeping the floor while B is cleaning the blackboard.
Divide the class into two groups. Tell one group to mime writing. Tell the other group to mime reading. Say Group A is writing while Group B is reading.Get the Ss to practice this sentence as they mime.(You may need to help the Ss by demonstrating the mime.)
Drill this structure：
T： Group B： draw (Group B mimes drawing a picture)
Ss： Group A is writing while Group B is drawing a picture.
T： Group A： play pingpong (Group A mimes playing pingpong)
Ss： Group A is playing pingpong while Group B is drawing a picture， etc.
Write the sentence on the Bb and show that while means the two events are happening at the same time， like this：
Group A is writing while Group B is reading.
Group A writing
Group B reading
Wb Ex. 3. Practise a dialogue with the Ss first， then let them work in pairs. If possible， ask them to say long sentences like I was washing my clothes while my mother was cooking.
Step 6 Workbook
Wb Ex. 4. Ss work in pairs and write the answers in their books. Then they practise the dialogue. Get some pairs to act it out.
The answers for Ex. 4 are： accident， happened， suddenly， Luckily， as， as， medicine， after， way.
Homework
Finish off the Workbook exercises.
Revise the contents of the unit for a test in the next lesson.
