Part 2: a or an

3. an octopus

4. a pen

5. a rubber

6. an aligator

7. an elephant

8. a teacher 

9. a bag

10. a cat

-  Dùng an khi chữ đằng sau bắt đầu bằng nguyên âm (a, o, u e,i)

- Dùng a khi chữ đằng sau bắt đầu bằng các phụ âm còn lại.

Part 3: Write

1. three bags

2. four cakes

3. six boys

4. ten frogs

5. twenty apples

6. seven girls

7. twenty bees

8. nine windows

9. five balls

10. two eyes

2, look and write a  or an  
3. an octopus
4. a pen
5. a rubber
6. an alligator
7. an elephant
8. a teacher
9. a bag
10. Cat
3, write
 2. four cakes
3. six boys

4.ten frogs
5. twenty apples
6. seven girls
7. twenty bees
8. nine windows
9. five balls
10. two eyes