Tham khảo tài liệu 'understanding and using english grammar 26', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 9. A Have you_ B No not yet. A You really ought to 10. A Mary s always wanted to learn how to B Isn t your brother_ You should__ 11. A Do you think I ought to or B I think you d better . If you don t 12. A Lately I can t seem to concentrate on anything and I feel B Maybe you should Or have you thought about EXERCISE 13. Necessity advisability and prohibition. Charts 9-5 9-7 Directions Which sentence in the following pairs is stronger Discuss situations in which a speaker might say these sentences. 1. a. You should go to a doctor. b. You d better go to a doctor. 2. a. Mary should go to work today. b. Mary must go to work today. 3. a. We ve got to go to class. b. We ought to go to class. 4. a. I have to go to the post office. b. I should go to the post office. 5. a. We shouldn t go into that room. b. We must not go into that room. 6. a. You d better not go there alone. b. You shouldn t go there alone. EXERCISE 14. SHOULD vs. MUST HAVE TO. Charts 9-5 - 9-7 Directions Use either should or must have to in the following. In some sentences either is possible but the meaning is different. Discuss the meanings of the completions. 1. A person wt A b k nS eat in order to live. 2. A person Iaou1 A eat a balanced diet. 3. If you want to become a doctor you go to medical school for many years. 4. I don t have enough money to take the bus so I walk home. 5. Walking is good exercise. You say you want to get more exercise. You walk to and from work instead of taking the bus. 6. We go to Colorado for our vacation. 7. According to my advisor I take another English course. 162 CHAPTER 9 8. Rice have water in order .
