​Infinitive

​We use the to-infinitive (to + base form of the verb):

• ​to express purpose.

He called to wish me happy birthday!

• ​after certain verbs: afford, agree, arrange, choose, decide, forget, hope, need, promise, refuse, try, want, would like, etc.

​ Laura needs to buy a new car.

• ​after the objects of certain verbs: advise, allow, encourage, invite, order, teach, tell, etc.

​ It was Glen who persuaded me to apply for this job.

​Infinitive

• ​with too and enough

The soup is too hot to eat.

• ​after the structure it + be + adjective.

​ It's difficult to read his handwriting.

• ​after certain adjectives: afraid, surprised, free, happy, ready, sorry.

​ At last he was free to do what he wanted.

• ​after verbs followed by a question word (who, what, which, where, how, but not why)

​Have you decided where to go for your holidays?

​Infinitive without to

​We use the infinitive without to (base form of the verb without to):

• ​after modal verbs (can, could, will, would, should, may, might, must)

Can you tell me what's wrong?

​We may go to the cinema tonight.

• ​after the verbs let and make.

​ Fay always makes me laugh.

​My brother doesn't let me drive his car.

• ​after would rather and had better.

​ I'd rather go to the cinema tonight.

​You'd better tell me the truth.

​To-infinitive / Infinitive without to

• ​I've decided to get a new goldfish. Do you want to come to the pet shop with me?​

• Remind me to go to the supermarket to buy some milk, will you?

• ​Edna doesn't know which hat to wear.

• ​We should all do something to save endangered species.

-​ing form (gerund)

​We use the -ing form (gerund) (base form of the verb + -ing) as a noun.

We use -ing forms (gerunds) :

• ​as subjects

​ Fishing can be very relaxing.

• ​after certain verbs: like, love, hate, enjoy, prefer, continue, finish, begin, practise, suggest, etc.

​ Ken just finished washing the car.

-​ing form (gerund)

We use -ing forms (gerunds) :

• ​after certain expressions don't mind, can't stand, how about, can't help, feel like, it's no use, etc.

​ Louis is interested in taking up a language course.

• ​after prepositions: for, of, about, without, etc.

​ Helen is thinking of buying a new car.

​ That knife is for cutting meat, not cheese.

• ​after the verb go to indicate physical activities.

​ We go skiing every year.

​THANK YOU FOR JOINING THIS CLASS

​

​

​Please do exercises C, D and E on

page 68 of your Full Blast Plus 4

workbook.