VerbAbout VerbsAction VerbsCausative VerbsContractionsDo and MakeFinite and Nonfinite VerbsGerundInfinitive FormInversionLinking VerbsModal VerbsMay and MightMoodsPhrasal VerbsSay and TellShallStative VerbsThird Person SingularUsed toRegular VerbsIrregular VerbsVerb FormsCompound Verbs
ConditionalConditionalZero ConditionalFirst ConditionalSecond ConditionalThird ConditionalMixed ConditionalInversion in Conditional Sentences
Passive VoicePassive VoicePresent Simple PassivePresent Continuous PassivePast Simple PassivePast Continuous PassivePerfect Tenses PassiveFuture Simple PassiveGoing to PassiveSay / Believe / SupposeGet + Participle
Adverbs of FrequencyAdverbs of FrequencyAdverbs of Frequency - Position in Sentence
QuestionsQuestion TagsRhetorical QuestionsEcho Questions
Reported SpeechReported SpeechModals in Reported SpeechReported Commands and RequestsReported QuestionsPresent Perfect in Reported SpeechFuture Perfect in Reported Speech
Irregular VerbsIrregular Verbs - GroupsIrregular Verbs - Forms
ParticiplesPresent ParticiplePast ParticiplePerfect Participle
Other TopicsWill vs. Going toIf / Even if / Whether / Unless If + Were or If + WasAs If / As Though + Past SubjunctiveHabits Expressed by Will and WouldHad BetterSubject
Read MoreAuxiliary VerbsAuxiliary Verbs: To BeAuxiliary Verbs: To HaveAuxiliary Verbs: To DoWhen To Use the Verb To Be
Grammar

Third Person Singular

Compared to other languages (like French, for example) conjugation in English is very regular.
If we conjugate a verb in any tense, the verb will stay the same in all persons. The only exception is the third person singular 
and a couple of verbs. In this article, we'll talk about forming the third person singular.

The third person singular is most often expressed by words such as he, she and it. But, in fact, any person, place, or thing in the singular form
(for example house, dog or keyboard) other than the speaker and the addressee is referred to in the third person singular.

Forming

The basic rule of conjugating the third person singular is adding -s to the base form of a verb.

a) All verbs ended in -y and a vowel before it, get -s.

Examples:

Eat

  • I eat
  • you eat
  • he eats
  • she eats
  • it eats
  • we eat
  • you eat
  • they eat

Make

  • I make
  • you make
  • he makes
  • she makes
  • it makes
  • we make
  • you make
  • they make

Buy and pay

  • buy - buys
  • pay - pays

b) Verbs ended in -ch, -sh, -ss, -x, -o get -es.

  • kiss - kisses
  • watch - watches
  • push - pushes
  • fix - fixes
  • go - goes
  • do - does

c) Verbs ended with -y and a consonant before it, get -ies.

  • cry - cries
  • try - tries
  • marry - marries

Exceptions

Examples
She has 4 pets.
Mike has a new job.
He has a very good understanding of the tenses.
He is twelve years old.
My house is very small.
  • modal verbs (such as should, may).
VerbAbout VerbsAction VerbsCausative VerbsContractionsDo and MakeFinite and Nonfinite VerbsGerundInfinitive FormInversionLinking VerbsModal VerbsMay and MightMoodsPhrasal VerbsSay and TellShallStative VerbsThird Person SingularUsed toRegular VerbsIrregular VerbsVerb FormsCompound Verbs
ConditionalConditionalZero ConditionalFirst ConditionalSecond ConditionalThird ConditionalMixed ConditionalInversion in Conditional Sentences
Passive VoicePassive VoicePresent Simple PassivePresent Continuous PassivePast Simple PassivePast Continuous PassivePerfect Tenses PassiveFuture Simple PassiveGoing to PassiveSay / Believe / SupposeGet + Participle
Adverbs of FrequencyAdverbs of FrequencyAdverbs of Frequency - Position in Sentence
QuestionsQuestion TagsRhetorical QuestionsEcho Questions
Reported SpeechReported SpeechModals in Reported SpeechReported Commands and RequestsReported QuestionsPresent Perfect in Reported SpeechFuture Perfect in Reported Speech
Irregular VerbsIrregular Verbs - GroupsIrregular Verbs - Forms
ParticiplesPresent ParticiplePast ParticiplePerfect Participle
Other TopicsWill vs. Going toIf / Even if / Whether / Unless If + Were or If + WasAs If / As Though + Past SubjunctiveHabits Expressed by Will and WouldHad BetterSubject
Read MoreAuxiliary VerbsAuxiliary Verbs: To BeAuxiliary Verbs: To HaveAuxiliary Verbs: To DoWhen To Use the Verb To Be