Intermediate English Grammar for ESL Learners - Robin Torres-Gouzerh 2016

Modal auxiliaries
2 The verb phrase

Some auxiliary verbs are called modal auxiliaries. They are used with a verb to show the degree of obligation of the action of the verb. Two important modal auxiliaries are have to and should.

Do you have to play the radio so loud?

Mary has to stay at home today.

Dad, you shouldn’t work so hard in this heat.

Why should I care?

Exercise 2.2 Underline the auxiliary verb in each sentence.

1. He does attend meetings on Tuesdays.

2. He is walking to the park with his dog.

3. She is leaving for summer camp on Sunday.

4. Alberto has gone to Cuba.

5. He has traveled to the south of Spain for years.

6. She should go alone this time.

7. He has to walk faster.

Exercise 2.3 Rewrite each sentence three times: (1) with be and a present participle, (2) in the present perfect tense, and (3) with the modal auxiliary should.

1. James tries on a pair of pants.

2. I live on about a hundred dollars a week.

3. Father scolds the children.

4. Does she work hard?

5. The conductor waits on the platform.