Unit 1.2

To Do

Introduction

To do is a main verb and an auxiliary verb that is essential in grammar.

It is an irregular verb and it has its own constructions in the affirmative, negative and interrogative forms.

Form

To do can be used as an auxiliary verb or a main verb that has its own meaning.To do is an irregular verb and in the affirmative, negative and interrogative form in present and past tenses it has different kinds of structures and forms.

To Do Affirmative

In the affirmative form, the verb to do follows this structure:
Subject + verb to do (without to) + …

In the present it has the following forms:

Subject To Do in Present Simple
I do
You do
He does
She does
It does
We do
Yout do
They do

In the past it has the following forms:

Subject To Do in Past Simple
I did
You did
He did
She did
It did
We did
You did
They did

To Do Negative

In the negative form the verb to do follows this structure:
Subject + to do (without to) + not + … 

In the present and in the past it has the following forms:

Subject To Do in Past Simple + not
I did not …
You did not …
He did not …
She did not …
It did not …
We did not …
You did not …
They did not …

*The short form (don’t/doesn’t) is used in spoken language or in informal writing.

In the present and in the past it has the following forms:

Subject To Do in Present Simple + not
I do not …
You do not …
He does not …
She does not …
It does not …
We do not …
You do not …
They do not …

 

To Do Interrogative

In the interrogative form the verb to do follows this structure:
To do (without to) + subject +  …?

In the present and in the past it has the following forms:

To Do in Present Simple Subject Question Mark
Do I …?
Do you …?
Does he …?
Does she …?
Does it …?
Do we …?
Do you …?
Do they …?

In the present and in the past it has the following forms:

To Do in Past Simple Subject Question Mark
Did I …?
Did you …?
Did he …?
Did she …?
Did it …?
Did we …?
Did you …?
Did they …?

Example

  • You do your homework.
  • He does his work diligently.
  • She did his job well.
  • I do not do my homework in the evening.
  • I cooked the meals, but I did not do the dishes.
  • Who did this?
  • Does he do the exercises well?

Use

We use the verb to do as:

  • an auxiliary verb: to form negatives and interrogative of other verbs, as well as for emphasis and negative imperatives;
  • a main verb: in the meaning of to perform or to complete an action.

Summary

To do can be used as a main verb or an auxiliary verb.

It is an irregular verb and it has its own constructions in the affirmative, negative and interrogative forms:
Subject + verb to do (without to) + …
Subject + to do (without to) + not + …
To do (without to) + subject +  …?

For example:
He did his job well.” → Subject + verb
I do not do my homework in the evening.” → Subject + verb + not
Does he do the exercises well?“→ Verb + subject + ?

 

Exercises

External link to To Do exercises (9).




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