1. Unit 6 Pets
Grammar

2. Teaching Aims:
A Giving instructions
B Using ‘should’ and ‘must’

3. tank
brush

4. Don’t park your bike here.
We start a sentence with the base form of a verb when we want to tell people what to do. We add ‘don’t’ in front of the verb when we want to tell people not to do something. A
You can’t swim here.
Don’t swim here.
You can’t park your bike here.
Don’t park your bike here.

5. Don’t smoke here.
Don’t fish here.

6. Park your bike here.
Please go slowly.

7. Be quiet, please.
Don’t make any noise.

8. Do Get to school on time. Listen carefully in class.
Keep your classroom clean.
Finish your homework after school.
Be friendly to others.

9. Don’t Don’t be late for school. Don’t talk in class.
Don’t look out of the window in class.
Don’t smoke.
Don’t bring pets into classroom.

10. Don’t frighten the cat.
Please clean the fish tank today.
Take the dog for a walk.
Please give it some water.
Be quiet. Don’t bark.
Brush the dog’s fur.

11. Learn how to look after pets.
Amy asks Kitty to look after her cat. She is giving Kitty some instructions. Find out what Amy wants Kitty to do. Rearrange the words to make sentences.
1. Brush her fur every day.
2. Don’t give her fish bones.
3. Give her enough water.
4. Don’t pull her tail.
5. Don’t give her a shower.
6. Keep her warm.

12. 1. Give it clean water.
2. Change the water once a week.
3. Don’t give it too much food.
4. Don’t hold it in your hand.
5. Don’t put it in the sun.

13. should 2. Please clean the fish tank three times a week. B
We use ‘should’ and ‘should not’ to give advice
and to tell people what is the best or right thing
to do.
should
1. Please play with your pet for some time every day.
You should play with your pet for some time every day.
2. Please clean the fish tank three times a week.
You should clean the fish tank three times a week.

14. should 3. Don’t feed your dog at the table.
You should not/ shouldn’t feed your dog at the table.
4. Don’t leave your pet at home alone for too long.
You should not/shouldn’t leave your pet at home alone for too long.

15. must B 1. You must feed your pet. 2. You must look after your pet.
We use ‘must’ to tell people that it is necessary
or very important to do something. We use ‘must
not’ to tell people that it is necessary or very
important not to do something. B
must
1. You must feed your pet.
2. You must look after your pet.
3. You must not/ mustn’t feed your dog too much food.
4. You must not/ mustn’t bring your pet to school.

16. How to look after a pet

17. Dogs like lots of exercise
Dogs like lots of exercise. You _____ walk them in the park once a day if you want them to be healthy. If you don’t have enough time, you ________ get one.
should
must not

18. If you have a rabbit, you _______ clean its hutch every day.
should

19. Fish are good pets but you _______ give them clean water
Fish are good pets but you _______ give them clean water. You ____________ give them too much food.
must
must not

20. should Cats are friendly and you don’t need to
walk them. I think you _________ get a cat.
should

21. e. You should get a bird or a goldfish.
Answers for B3
a. You must clean the cage once a week. 2
b. You should take her out to the park at least
once a day. 4
c. You should get a good cat brush. 1
d. If your flat is very small, you should not
get a dog. 3
e. You should get a bird or a goldfish. 3
f. You must take your dog out more often. 4
g. You should get a book about the right way to
look after birds. 2
h. You should brush your cat every day. 1

22. Give a correct instruction according to the information.
1. Tom’s favorite pet is a little rabbit. He likes playing with it after school. But sometimes he pulls the rabbit’s ears and takes it here and there. You know it’s bad for the rabbit. What should you say to him?
2. Simon will go to Shanghai. He is worried about his goldfish. What is he going to say to his friend?

23. 3. Daniel walks the dog at six a. m. every day
3. Daniel walks the dog at six a.m. every day. One morning he takes a walk with the dog in the street. A policeman saw this and said to him:
4. One afternoon a little baby is sleeping in bed. Some children are playing games nearby. They are singing happily. What should the baby’s mother say:
5. School is over. But the classroom is dirty. What will your teacher say to the students?

24. Homework
Write a instruction about how to look after a pet.

25. The end of this part!