1. Infinitive or ING form?

2. Sometimes we need to decide whether to use a verb in its:
-ing form (doing, singing) or
infinitive form (to do, to sing).
For example, only one of the following sentences is correct. Which one?
I dislike working late. (???)
I dislike to work late. (???)

3. When to use the infinitive
The infinitive form is used after certain verbs:
- forget, help, learn, teach, train - choose, expect, hope, need, offer, want, would like - agree, encourage, pretend, promise, recommend - allow, can/can't afford, decide, manage, mean, refuse
I forgot to close the window.
Mary needs to leave early.
Why are they encouraged to learn English?
We can't afford to take a long holiday.

4. The infinitive form is always used after adjectives, for example: - disappointed, glad, happy, pleased, relieved, sad, surprised
I was happy to help them.
This includes too + adjective:
The water was too cold to swim in.
The infinitive form is used after adjective + enough:
She is rich enough to buy two.

5. When to use -ing
The -ing form is used when the word is the subject of a sentence or clause:
Swimming is good exercise.
Doctors say that smoking is bad for you.
The -ing form is used after a preposition:
I look forward to meeting you.
They left without saying "Goodbye."

6. The -ing form is used after certain verbs: - avoid, dislike, enjoy, finish, give up, mind/not mind, practise
I dislike getting up early.
Would you mind opening the window?

7. It started to rain. It started raining. I like to play tennis.
Some verbs can be followed by the -ing form or the infinitive without a big change in meaning: begin, continue, hate, intend, like, love, prefer, propose, start.
It started to rain.
It started raining.
I like to play tennis.
I like playing tennis.

8. Fill in the blanks with the infinitive or ing form
1. We like ______ our grandmother on Sundays. (visit)
2. I might want _____ your Science notes. (borrow)
3. My father hates _____a tie to work. (wear)
4. We can't afford ______ a vacation this summer. (take)
5. The company was pleased ______ your thank-you letter. (receive)

9. 6. Would you mind _____ a window? (open)
7. My suitcase is light enough _____ myself. (carry)
8. She cannot leave the table without ______ her dinner. (finish)
9. The music will continue _______until you turn it off. (play)
10. My little brother dislikes ______his hair brushed. (have)

10. Now, it is your turn to practice with the expressions
Create a sentence with each verb or expression