1) The lesson aims to teach students about using "must" and "mustn't" through watching a video and completing exercises. 2) Students will work in groups to discuss rules for class behavior using "must" and "mustn't", then write the rules in pairs. 3) An additional activity has students reorder words to create rules for a museum using "must" and "mustn't". This helps consolidate their understanding of the grammar points.

1. CHAPTER 4
I. Objectives:
By the end of lesson, students will be able to:
- Understand and use “must” and “mustn’t” by watching a video about
growing money to list the things you have to do. Then, students can
check true or false.
- Work in groups to talk about what students must/ mustn’t do in class.
Then, write the activities in the right column in pairs. Next, re-oder the
words to make the rules for a museum.
- Write the right verb form that follows must or mustn’t.
II. Lesson plan.
Time Names of
activities
Steps Step aims
10’
10’
A. Video
watch –
Grow
money
B. Must/Mus
tn’t –
Practice.
1) If you want to grow your
money , what do you have to
do? Are the following
sentences true or false?
a) You must work hard.
b) You must spend your
money or treats.
c) You mustn’t blow your
money.
d) You mustn’t set a goal.
2) Watch the video clip:
*Answer key:
a. True c. True
b. False d. False
3) Check with your partner.
1)What must and mustn’t
you do in class?
2)In pairs, with your partner
write the activities in the
right column below.
- Provide Ss the
topic they watch
Then, use
“must” and
“mustn’t”.
-Explain the
questions for the
Ss.
-Watch the clip
and understand
it.
-Check the
answers with
partner.
-Understand and
use to do the
exercise.

2. 20’
5’
C. Practice:
D.consolidation:
*Answer key:
-Must: bring a pen to class,
arrive on time, listen to your
teacher, wear a uniform, do
your homework.
-Mustn’t: fight in class,
cheat in test, shout in class,
eat food in class, bring pets
to class.
3) Re-order the words to
make the rules for a
museum.
*Answer key:
a. You must be quiet.
b. You mustn’t take photos.
c. You must be careful.
d. You mustn’t touch
exhibits.
e. You must n’t run around.
f. You must follow the rules!
4) What is the verb form that
follows “must” and
“mustn’t”?
S +must/mustn’t + V(inf)
5) Write some rules for the
library and swimming pool.
a. In the library:
- mustn’t make noise
- mustn’t pick the books up
- must be strict.
b. In the swimming pool:
- must be careful
- must listen to the safe
lifeguard.
- mustn’t swim in the deep
end.
-Practice the
position of
“must” and
“mustn’t” in the
sentences.
- Know the
position of
“must” and
“mustn’t” in the
sentences.
-Use “must” and
“mustn’t” to
write the
sentences
-Remember the
useages of
“must” and
“mustn’t”.