This document provides a summary of a grammar lecture on the use of do/does in present tense sentences. It discusses that do/does is used for interrogative and negative sentences in present tense. Do is used when the subject is first or second person singular (I, we, you), while does is used when the subject is third person singular (he, she, it). An example is provided for each. Rules are given that the main verb cannot include -s when do/does is used as an auxiliary verb. Students will practice filling in blanks with do or does in worksheets according to these rules.

1. Grammar Concepts
English
Lecture By: Miss Tayyeba

2. IN PREVIOUS LECTURES
We have studied about:
What is Tense?
What are the categories of a Tense?
What is Present Tense?
What are the subcategories of Present Tense?
What is Present Indefinite Tense and what are
its rules?
What is Present Continuous Tense and what
are its rules?
What is Present Perfect Tense and what are its
rules?

3. Today’s Topic
Use of Do/Does

4. USE OF DO/DOES IN PRESENT
TENSE
•Basically we use do/does for the interrogative and
negative sentences of Present tense.
•We use Do when the subject is first of second
singular pronoun. i.e. I, we, they, you.
e.g. Do you live in London?
No. I do not live in London.

5. •We use Does when the subject is third
person singular pronoun. i.e. He, she,
it.
e.g. Does she like sports?
No. she does not like sports.

7. RULES TO REMEMBER
1. We can’t use –s with the main verb of
the sentence if we are using do/does in
that sentence.
e.g. He does not likes apples.
In the above example, as we can the see
the verb ‘like’ has an –s , which is
highlighted in black color which means
that it’s an error.

8. In this sentence, we have
auxiliary verb ‘does’ which
shows that we can not use –s
with the main verb.

10. TODAY’S DIARY
In the next slide, you have two
worksheets, in which some blanks are
given and you are supposed to put Do
or Does in the given blanks according to
the rules of do/does.