Gerunds and Infinitives Part 1

1. A gerund is a noun made from a verb by adding "-ing." The gerund form of the verb "read" is "reading." You can use a gerund as the subject, the complement, or the object of a sentence.

Examples:

• Reading helps you learn English. subject of sentence
• Her favorite hobby is reading. complement of sentence
• I enjoy reading. object of sentence

Gerunds can be made negative by adding "not."

Examples:

• He enjoys not working.
• The best thing for your health is not smoking.

2. Infinitives are the "to" form of the verb. The infinitive form of "learn" is "to learn." You can also use an infinitive as the subject, the complement, or the object of a sentence.

Examples:

• To learn is important. subject of sentence
• The most important thing is to learn. complement of sentence
• He wants to learn. object of sentence

Infinitives can be made negative by adding "not."

Examples:

• I decided not to go.
• The most important thing is not to give up.

3. Both gerunds and infinitives can be used as the subject or the complement of a sentence. However, as subjects or complements, gerunds usually sound more like normal, spoken English, whereas infinitives sound more abstract. In the following sentences, gerunds sound more natural and would be more common in everyday English. Infinitives emphasize the possibility or potential for something and sound more philosophical. If this sounds confusing, just remember that 90% of the time, you will use a gerund as the subject or complement of a sentence.

Examples:

• Learning is important. normal subject
• To learn is important. abstract subject - less common
• The most important thing is learning. normal complement
• The most important thing is to learn. abstract complement - less common

4. As the object of a sentence, it is more difficult to choose between a gerund or an infinitive. In such situations, gerunds and infinitives are not normally interchangeable. Usually, the main verb in the sentence determines whether you use a gerund or an infinitive.

Examples:

• He enjoys swimming. "Enjoy" requires a gerund.
• He wants to swim. "Want" requires an infinitive.

5. Some verbs are followed by gerunds as objects. List of Verbs Followed by Gerunds

Examples:

• She suggested going to a movie.
• Mary keeps talking about her problems.

6. Some verbs are followed by infinitives. List of Verbs Followed by Infinitives

Examples:

• She wants to go to a movie.
• Mary needs to talk about her problems.

http://www.englishpage.com/gerunds/part_1.htm

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.

http://www.ego4u.com/en/cram-up/grammar/infinitive-gerund