Simple Present Tense

Do / Does / Don’t / Doesn’t

Affirmative

• I study mathematics.• You study mathematics.• He studies mathematics.• She studies mathematics.• It studies mathematics.• We study mathematics.• Theystudy mathematics.

Subject + Verb + Complement

Grammar Rules

Verbs ending: "SS", "SH", "CH", "O" and "X" 

• He fishes  at the sea.• She kisses  to her boyfriend.• He watches  the mountain.• He fixes  his car.• She goes  to the office.

Subject + Verb + Complement

Grammar Rules

Verbs ending: Consonant + Y

• She tries  to be better.• She studies  for her exam.• He flies  in the sky.• He tidies  his bedroom.• He spies  me.

Subject + Verb + Complement

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• She buys  a car.• She pays  for the taxi.• He plays  the guitar.• He enjoys  playing tennis.• He says  to me.

Grammar Rules

Subject + Verb + Complement

Verbs ending: Vowel + Y

Negative

• I don’t play drums.• You don’t play drums.• He doesn’t play drums.• She doesn’t play drums.• It doesn’t play drums.• We don’t play drums.• Theydon’t play drums.

Subject + Don’t/Doesn’t + Verb [inf]+ Complement

Aux. →inf. Verb.

Grammar Rules

Subject + Don’t/Doesn’t + Verb [inf]+ Complement

Do + Not = Don’t Does + Not = Doesn’t 

• I  don't  play tennis.• He  doesn't  work in an office.• They  don't  travel to Santiago.

• I  do not play tennis.• He  does not  work in an office.• They  do not  travel to Santiago.

Aux. → inf. Verb.

Interrogative

• Do I go to work ?• Do You go to work ?• DoesHe go to work ?• DoesShe go to work ?• DoesIt go to work ?• Do We go to work ?• Do Theygo to work ?

Do/Does + Subject + Verb [Inf] + Complement ?

Aux. →inf. verb.

Grammar Rules

• Do you work on Sundays?• What does he do on Saturday?

• Don’t you come here on Saturdays?

• Why doesn’t she talk with us?

Affirmative and Negative questions 

Wh + Do/Does + Subject + Verb [Inf] + Complement ?

Do/Does + Subject + Verb [Inf] + Complement ?

Aux. → inf. verb

Simple Present Tense

Do / Does / Don’t / Doesn’t

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