Task 3: Điền trợ động từ để câu mang nghĩa phủ định.

• 1. I don't like tea.
• 2. He doesn't play football in the afternoons.
• 3. You don't go to bed at midnight.
• 4. They don't do homework on weekends.
• 5. The bus doesn't arrive at 8.30 a.m.
• 6. My brother doesn't finish work at 8 p.m.
• 7. Our friends don't live in a big house.  
• 8. The cat doesn't like me.  

Task 4: Chuyển sang câu phủ định.

Để chuyển các câu khẳng định sang câu phủ định, chúng ta cũng sử dụng trợ động từ "don't" hoặc "doesn't" tùy thuộc vào chủ ngữ.

• 1. She feeds the animals. - She doesn't feed the animals.
• 2. We take photos. - We don't take photos.
• 3. Sandy does the housework every Thursday. - Sandy doesn't do the housework every Thursday.
• 4. The boys have two rabbits. - The boys don't have two rabbits.