The document outlines an English lesson on using "must" and "mustn't" to express rules and obligations. Students first watch a video, then practice reordering words to form rules using must and mustn't. They discuss in groups what activities one must and mustn't do in class. Finally, students consolidate their learning by discussing the grammatical forms that follow must and mustn't, and writing example rules for a library and swimming pool using these words.

1. Chapter 4
I. Objectives: Students watch the video. Then
they known the way to use must and mustn’t
in practicing.

2. A. Watch the video- Grow money
. Watch the video then answer questions 1 and
2 in your handout:

3. Q3: Check with your partner.

4. B. Practice with must- mustn’t
Work in groups of 5 in 5 minutes to discuss
about: What must/ mustn’t you do in class?

5. Work in pairs: Write the activities in the right
column.
Fight in class, cheat in tests, bring a pen to class, shout in class, arrive on time,
listen to your teacher, eat food in class, wear a uniform, do your homework, bring
pets to class.
Must Mustn’t

6. Work individually: Reoder the words to make the
rules for a museum.
Sentence a is an example:
a. quiet You must be  You must be quiet.
b. take You photos mustn’t …………………………………………………
c. must be You careful ….....................................................................
d. You touch mustn’t exhibits ……………………………………………….
e. run mustn’t around You  ……………………………………………………….
f. rules! Must You follow the  ………………………………………………..

7. C. Consolidation:
Discuss in large groups:
1. What is the verbs form that follow must or
mustn’t?
2. Write some rules for the library and
swimming pool:
LIBRARY Swimming Pool
1. ………………………………………………………
2. ……………………………………………………..
3. ………………………………………………………
4. ………………………………………………………
5. ………………………………………………………
1. …………………………………………………….
2. ……………………………………………………..
3. ……………………………………………………..
4. ……………………………………………………..
5. ………………………………………………………

8. Goodbye!
See you later.