ISI Dublin │ How to Use "Do" in English - Understanding One of English’s Most Common Verbs

The verb “do” is used in many different ways in English. It can be a main verb, an auxiliary (helping) verb, or appear in short answers and fixed expressions. Today we’ll try explain how to use “do” correctly and give you examples to help you feel more confident using it in everyday conversation.

Some learners mix up “make” and “do,” which is understandable. As a general rule, we “do” tasks, chores, or work, and we “make” things we can touch, eat, or see.

Compare: I do the laundry. Vs. I make a cake. Do you see the difference?

1. “Do” as an Auxiliary Verb

We often use “do” to make questions and negative sentences in the present simple and past simple.

Here is a table to show how “do” works with different pronouns and tenses:

Pronoun	Present Simple – Affirmative	Present Simple – Negative	Present Simple – Question	Past Simple – Affirmative	Past Simple – Negative	Past Simple – Question
I	I work.	I do not (don’t) work.	Do I work?	I worked.	I did not (didn’t) work.	Did I work?
You	You play.	You don’t play.	Do you play?	You played.	You didn’t play.	Did you play?
He / She / It	She reads.	She does not (doesn’t) read.	Does she read?	He read.	He didn’t read.	Did he read?
We	We cook.	We don’t cook.	Do we cook?	We cooked.	We didn’t cook.	Did we cook?

2. “Do” as a Main Verb

“Do” can also be the main verb in a sentence. In this case, it usually means to perform or carry out an action.

Examples:

I do my homework every evening.
She does the cleaning at the weekend.
They did their project last week.

Notice that “do” changes form (see the table above):

do / does in the present
did in the past
done in the present perfect (e.g. “I have done my homework.”)

Expression	Meaning
do homework	complete your school tasks
do the dishes	wash the plates and cups
do your hair	brush or style your hair
do business	work or make deals
do your best	try as hard as you can

“Do” is a useful and important verb in English. It acts as both a main verb and an auxiliary (helping) verb, and it appears in many common expressions. Practice making questions and negative sentences with “do” and notice how native speakers use it in conversation, although maybe ignore when people say “do be” The more you use it, the easier it becomes.

How to Use “Do” in English – Understanding One of English’s Most Common Verbs

Compare: I do the laundry. Vs. I make a cake. Do you see the difference?

1. “Do” as an Auxiliary Verb

2. “Do” as a Main Verb

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