Auxiliary Verbs

What auxiliaries do we use to change the sentences into questions?

• Did

• Yes

• Do, Does

Choose the correct interrogative sentence.

• Does a doctor see patients?

• Do a doctor see patients?

Choose the correct interrogative sentence:

• Do a doctor work in different places?

• Does a doctor work in different places?

what auxiliaries do we use to change sentences into negative form?

• Did

• Yes

• Don't, doesn't

Choose the correct negative sentence

• Doctors don't work on farms.

• Doctors doesn't work on farms.

If there isn´t an operator in a positive declarative sentence...

• we use the lexical verb

• we introduce the dummy operator "do"

• we can introduce the operators "be" and "have"

• the main verb becomes the operator

Of the 3 classes of verbs, _ can act as auxiliaries and as main verbs

__________can be auxiliaries and main verbs.

• Be

• Have

• All are correct

• Do

This modal indicates necessity

• Can

• Should

• Must

• Will

Which of the following is an auxiliary verb?

• Run

• Have

• Eat

• Jump