Unit 15: USING THE VERB FORMS

Unit 14 tells you the names of the different forms and how to make them. This unit tells you when to use them.

Base form

IN PRESENT TENSE (except for 3rd person singular)

EXAMPLES:
We work near you.
Have you worked here long?
Do you work here?

AFTER AUXILIARY VERB DO (Unit 17)

EXAMPLE: Did you work there?

IN IMPERATIVES (Unit 18)

EXAMPLE: Have a seat!

AFTER TO

EXAMPLE: I wanted to go home.

AFTER MODAL VERBS (Unit 27)

EXAMPLE: You must hurry.

-s form

Use only in third person singular (Unit 2) of present tense.

EXAMPLES:
He works near you.
Has he worked here long?
Does he work here?

Past form

Use only in past tense.

EXAMPLES:
They worked near you.
He had worked with them.
Did you work here?

-ing form

IN CONTINUOUS FORMATIONS (Units 22, 23, 24)

EXAMPLES:
He is working with them.
She has been working.

AS A NOUN (Unit 48)

EXAMPLE: Working here is very nice.

Past participle

IN PERFECT FORMATIONS (Unit 24)

EXAMPLE: He has worked in many places.

IN PASSIVE FORMATIONS (Unit 43)

EXAMPLE: The jobs are being divided.

NOTICE: The forms of be and their uses are in Unit 16.

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Exercise 15.1
Exercise 15.2