09. Look at phrases a-c taken from the text and answer the questions which follow.

a. I have to attend three lectures a week
b. you must have a great deal of self-discipline
c. you should choose something you will enjoy

1. Which of these statements expresses advice?

2. Which two of these statements express an obligation?

3. Which of these statements expresses a strong obligation?

4. What is the negative form for each of these statements?

a

b

c

5. What is the past tense for each of these statements?

a

b

c

10. Complete the sentences to show strength of obligation. More than one answer is possible.

1. I study harder. (strong obligation)

2. I go to school today. (no obligation)

3. You revise for your exams this weekend. (advice)

4. You be late for lessons. (strong negative obligation)

11. Study these university signs. Which sentence in each pair is most likely to be correct and why?

1.

2.

3.