Infinitive and Gerund

Infinitive

Use

Certain words are followed by an infinite verb with or without ‘to’.

Use and Word Lists	Example
as the subject of a clause	To know you is to love you.
after certain expressions (without ‘to’)	Why not go to the cinema?
after certain verbs (without ‘to’)	I can swim.
after certain verbs (with ‘to’)	He wants to swim.
after certain verbs with interrogatives (infinitive constructions)	They don’t know how to swim.
after certain verbs with objects (without ‘to’)	He made her swim.
after certain verbs with objects (with ‘to’)	They wanted him to swim.
after certain adjectives and their comparisons	It’s easier to swim downstream.
after nouns deriving from the verbs mentioned above	We made a promise to swim. (derived from the verb ‘to promise’)

Gerund

Form

ing form of the verb

Exceptions in Spelling

See → Present Progressive – Exceptions

Use

Certain words are followed by an Ing-Form.

Use and Word Lists	Example
as the subject of a clause	Cycling is good for your health.
after certain adjectives	He’s afraid of going by plane.
after certain prepositions	Before going to bed he turned off the lights.
after certain verbs	I enjoy cooking.
after certain verbs with prepositions	I am looking forward to seeing you again.
after certain nouns	We had problems finding our way back home.

Words followed either by Infinitive or Ing-Form

Use and Word Lists	Example
same meaning	I started to read. / I started reading.
same meaning but different use	She forbids us to talk. / She forbids talking.
different meaning	He stopped to smoke. / He stopped smoking.
infinitive or present participle	I saw him go up the stairs. / I saw him going up the stairs.