Infinitives are the "to" forms of the verb, for example: to go, to eat, to play.
Using an infinitive suggests that you are talking about future or potential activities or experiences.
We use infinitives:
1. After verbs that generally refer to a future event:
Example: She threatened to quit if she didn't get a raise.
2. After adjectives:
- be disappointed
- be glad
- be happy
- be pleased
- I'm pleased to meet you.
- I'm disappointed to hear that you flunked maths.
3. After "too" & "enough":
- too difficult
- easy enough
- It's too difficult to convince him to be helpful.
- But it's easy enough to fool him to get what you want.
Gerunds are the forms of the verb with "-ing" ending, for example: reading, skating etc.
Using a gerund suggests that you are referring to real activities or experiences.
We use gerunds:
1. After some verbs that refer to real-time activities:
|avoid||fancy||mind (object to)||report|
|can’t help||feel like||permit||risk|
Example: He misses playing with his friends.
2. After prepositions:
- aim at
- keep on
- interested in
- instead of
- good at
- I am interested in collecting stamps.
- After playing football I drank an orange juice.
3. After some expressions:
- It's no use ...
- It's no good ...
- There's no point in ...
- I can't help...
- I don't mind...
- I can't stand/bear...
Example: It's no use convincing him to meet her.
Verbs followed by gerunds or infinitives
Verbs followed by a gerund or infinitive with no change in meaning:
Example: It started to rain. / It started raining.
- can’t bear
- can’t stand
Verbs followed by a gerund or infinitive with a change in meaning:
1. He forgot opening the window (He opened the window, but he forgot doing so).
2. He forgot to open the window (He was supposed to open the window, but he forgot).
1. She regrets quitting her job. (She left her job, and now she regrets it.)
2. She regrets to quit her job. (She still works but she is sorry to quit her job.)
1. He stopped chatting. (He was chatting, and then he stopped.)
2. He stopped to chat. (He was doing something else, and then he stop in order to chat.)
1. I remembered locking the storage. (I had a memory in my mind of locking the storage.)
2. I remembered to lock the storage. (I locked the storage as I should have.)
1. They tried moving to Australia. (They moved to Australia for some time to see if it works out for them.)
2. They tried to move to Australia. (They made an attempt to move to Australia, but it wasn't successful. They didn't move to Australia after all.)