Main/Action and Helping verbs and Infinitive

Front

Main verb in: 'The red fox is going to catch the rabbit.'

Back

going

Front

Identify the infinitive in: The red fox is going to catch the rabbit.

Back

to catch

Front

Helping verb in: 'The red fox is going to catch the rabbit.'

Back

is

Front

Helping verb in: 'Peter should work to earn extra money.'

Back

should

Front

Main verb in: 'Peter should work to earn extra money.'

Back

work

Front

Identify the infinitive in: Peter should work to earn extra money.

Back

to earn