Underline the infinitive | Class 8 grammar worksheets

What are infinitives?

Infinitives are expressions like to work, to write, to go, to come and to sing.

Note that the ‘to’ that precedes the infinitive is not really a part of the infinitive. In fact, the infinitive can be used without ‘to’. For example, the infinitive is always used without ‘to’ after modal auxiliary verbs.

  • He can swim. (NOT He can to swim.) Here ‘swim’ is an infinitive.

Infinitives are usually used with ‘to’ in other cases.

Exercise

In the following sentences underline the infinitives.

1. It is time to go to bed.

2. He came to the city to look for work.

3. She is anxious to hear from her mother.

4. You have the right to remain silent.

5. The doctor advised him to quit smoking.

6. To watch him eating really gets on my nerves.

7. There is a lot of work to do.

8. I would really like to understand philosophy.

9. He asked her if she would like to dance with him.

10. Slowly he began to get up off the floor.

Answers

1. It is time to go to bed.

2. He came to the city to look for work.

3. She is anxious to hear from her mother.

4. You have the right to remain silent.

5. The doctor advised him to quit smoking.

6. To watch him eating really gets on my nerves.

7. There is a lot of work to do.

8. I would really like to understand philosophy.

9. He asked her if she would like to dance with him.

10. Slowly he began to get up off the floor.

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