Concordancia Sujeto-Verbo: La Regla de la 'S' (Concordancia Sujeto-Verbo)
he, she, it o un singular noun. ¡Es tu regla de oro!
Grammar Rule in 30 Seconds
In the Present Simple, always add an 's' to the verb when the subject is He, She, or It.
- Add -s for most verbs: 'He works' (max 20 words)
- Add -es for verbs ending in -ch, -sh, -x, -z, or -s: 'She watches'
- Change -y to -ies if a consonant comes before it: 'It flies'
Overview
My cat love sleeping y tu amigo pesado obsesionado con la gramática te ha mandado un DM inmediatamente? Todos hemos pasado por eso. La concordancia sujeto-verbo es el pegamento del inglés.s extra. Si el sujeto tiene amigos, el verbo se queda relajado.How This Grammar Works
he, she, e it.s al final de sus verbos en presente. Todos los demás (I, you, we, y they) son mucho más relajados y usan la forma base del verbo.The dog bark, suena como si tu cerebro todavía estuviera cargando el paquete de idioma. Si dices The dog barks, suenas como un profesional. Curiosamente, I y you son personas singulares, pero siguen las reglas del plural.
Formation Pattern
I, you, he, she, it, we, o they? ¿O es un sustantivo como my phone?
he, she, it o sustantivos singulares).
-s. Si el verbo termina en -ch, -sh, -x, o -s, añade -es (como watches).
y, cambia la y por i y añade -es (como studies).
be, have, y do tienen sus propios humores. I am, He is, They are. She has, We have.
When To Use It
wake up, she wakes up), afirmando hechos (The sun rises), o comentando una serie de Netflix (The main character dies al final—¡alerta de spoiler!), necesitas esta regla. Es esencial para correos profesionales donde quieres parecer competente.My experience match the job frente a My experience matches the job. Lo segundo te consigue la entrevista; lo primero podría darte un 'no' educado. Úsalo cuando escribas a tu crush; nada mata más el ambiente que la mala gramática.The enemy moves left es mucho más claro que Enemy move left. Es la base de casi todas las frases que construirás en inglés.
Common Mistakes
s al final de un sustantivo (como dogs) y piensan que el verbo también necesita una s. ¡No! Es al revés. Si el sustantivo tiene una s, el verbo normalmente no. The dogs bark (Correcto). The dogs barks (Incorrecto). Es como un balancín: solo un lado puede tener la s. Otro clásico es la trampa de I y you. Aunque I es solo una persona, nunca lleva la -s. I likes pizza te hace sonar como un personaje de dibujos animados. Quédate con I like pizza. Luego está el dolor de cabeza de los 'Sustantivos Colectivos' como team o family. En inglés americano, solemos tratarlos como una sola unidad. Así que, The team wins. No olvides las 'Frases Interpuestas'. Si dices The box of chocolates is on the table, el sujeto es box, no chocolates.Contrast With Similar Patterns
I worked, she worked). La lucha de la concordancia sujeto-verbo es principalmente una fiesta del Presente.-ing). En She is walking, la concordancia ocurre en la parte del is, no en walking. No dirías She walking.can o will. Estos tipos son rebeldes: nunca cambian, sin importar quién sea el sujeto. He can swim, no He cans swim.There is a fly in my soup (una mosca).Quick FAQ
P: ¿everyone lleva un verbo singular o plural?
R: ¡Singular! Suena a mucha gente, pero gramaticalmente es un grupo. Di Everyone likes coffee.
P: ¿Qué pasa con and?
R: Si tienes dos sujetos unidos por and, se convierte en plural. Tom and Jerry run fast.
P: ¿Es My family is o My family are?
R: En EE. UU. decimos is. En el Reino Unido a menudo dicen are.
P: ¿Por qué you siempre usa el verbo plural?
R: Porque you solía ser solo para grupos en inglés antiguo. Con el tiempo empezamos a usarlo para una persona, pero mantuvimos las formas plurales.
P: ¿Se aplica la regla de la 's' a was y were?
R: ¡Sí! I was, He was, pero They were.
2. Negative Contractions (Third Person)
| Full Form | Contraction | Usage Note |
|---|---|---|
|
He does not
|
He doesn't
|
Most common in speech
|
|
She does not
|
She doesn't
|
Most common in speech
|
|
It does not
|
It doesn't
|
Most common in speech
|
Present Simple Conjugation: 'To Work'
| Subject | Verb Form | Example |
|---|---|---|
|
I
|
Base Form
|
I work
|
|
You
|
Base Form
|
You work
|
|
He
|
Base + S
|
He works
|
|
She
|
Base + S
|
She works
|
|
It
|
Base + S
|
It works
|
|
We
|
Base Form
|
We work
|
|
They
|
Base Form
|
They work
|
Meanings
The rule requiring the addition of a suffix (-s, -es, or -ies) to a base verb when the subject is in the third-person singular (He, She, It, or a single name/object) in the present tense.
Standard Agreement
Adding a simple 's' to the majority of English verbs to match a singular subject.
“He plays the guitar every evening.”
“She lives in a small apartment.”
Phonetic Spelling Adjustment
Adding '-es' instead of '-s' when a verb ends in sounds that would be hard to pronounce with just an 's' (like 'sh' or 'ch').
“He washes his car on Sundays.”
“She teaches mathematics at the local school.”
Consonant-Y Transformation
Changing the 'y' to 'i' and adding 'es' when the verb ends in a consonant followed by 'y'.
“The baby cries when he is hungry.”
“She studies hard for her exams.”
Reference Table
| Sujeto | Forma del Verbo | Ejemplo |
|---|---|---|
|
I
|
walk
|
I walk to school.
|
|
You
|
walk
|
You walk fast.
|
|
He
|
walks
|
He walks his dog.
|
|
She
|
walks
|
She walks every day.
|
|
It
|
walks
|
It walks quietly.
|
|
We
|
walk
|
We walk home together.
|
|
They
|
walk
|
They walk in the park.
|
|
Mi gato (singular)
|
walks
|
My cat walks on the keyboard.
|
|
Mis gatos (plural)
|
walk
|
My cats walk outside.
|
Espectro de formalidad
He serves as the Chief Executive Officer. (Professional introduction)
He works as a manager. (Professional introduction)
He's a manager. (Professional introduction)
He runs the show. (Professional introduction)
Concordancia Sujeto-Verbo: La Regla de la 'S'
Sujetos Singulares
- Él He walks.
- Ella She reads.
- Eso It rains.
- Un nombre (ej. Tom) Tom works.
- Un sustantivo singular (ej. El perro) The dog barks.
Sujetos Plurales
- Nosotros/as We learn.
- Ellos/as They play.
- Sustantivos plurales (ej. Los estudiantes) The students study.
Casos Especiales
- Yo I speak.
- Tú/Ustedes You understand.
- Verbos con 'do/does' Does he like?
Formas Verbales: Sujetos Singulares vs. Plurales
Diagrama de Flujo de la Regla de la 'S'
¿La frase está en Presente Simple?
¿El sujeto es 'I' o 'You'?
¿El sujeto es 'He', 'She', 'It', o un sustantivo singular (ej. 'The cat', 'John')?
¿El sujeto es plural ('We', 'They', o sustantivos plurales como 'The cats', 'Students')?
Sujetos y Sus Formas Verbales
Verbos con '-s' (3ra Persona del Singular)
- • He likes
- • She works
- • It rains
- • My friend studies
- • The car drives
Verbos sin '-s' (Otros Sujetos)
- • I like
- • You work
- • We rain
- • They study
- • The cars drive
Ejemplos por nivel
He drinks milk every morning.
Él bebe leche cada mañana.
She speaks English very well.
Ella habla inglés muy bien.
It rains a lot in London.
Llueve mucho en Londres.
My cat likes fish.
A mi gato le gusta el pescado.
He doesn't watch TV at night.
Él no ve la televisión por la noche.
Does she study at the library?
¿Estudia ella en la biblioteca?
The bus finishes its route here.
El autobús termina su ruta aquí.
He has a new smartphone.
Él tiene un teléfono inteligente nuevo.
Everyone knows that the earth goes around the sun.
Todo el mundo sabe que la tierra gira alrededor del sol.
Nobody wants to work on Saturdays.
Nadie quiere trabajar los sábados.
She tries to exercise at least three times a week.
Ella intenta hacer ejercicio al menos tres veces por semana.
The news starts at eight o'clock.
Las noticias empiezan a las ocho.
Neither of my brothers lives in this city.
Ninguno de mis hermanos vive en esta ciudad.
The government proposes a new tax on sugar.
El gobierno propone un nuevo impuesto al azúcar.
The data suggests that prices are rising.
Los datos sugieren que los precios están subiendo.
Does anyone know where the manager is?
¿Alguien sabe dónde está el gerente?
The complexity of the issues requires a detailed analysis.
La complejidad de los problemas requiere un análisis detallado.
Physics deals with the fundamental laws of nature.
La física trata con las leyes fundamentales de la naturaleza.
Every man and woman has the right to vote.
Cada hombre y mujer tiene el derecho a votar.
The jury reaches a verdict after hours of deliberation.
El jurado llega a un veredicto tras horas de deliberación.
The sheer number of variables involved complicates the process.
La gran cantidad de variables involucradas complica el proceso.
Politics is often described as the art of the possible.
La política se describe a menudo como el arte de lo posible.
If anyone calls, tell them I'm busy.
Si alguien llama, diles que estoy ocupado.
The United States maintains a strong presence in the region.
Estados Unidos mantiene una fuerte presencia en la región.
Fácil de confundir
Both use an 's' at the end, but for opposite reasons.
Learners often say 'He playing' instead of 'He plays' or 'He is playing'.
Learners want to keep the 's' when 'does' is present.
Errores comunes
He go to school.
He goes to school.
She like coffee.
She likes coffee.
It work well.
It works well.
My father drive a car.
My father drives a car.
Does he likes pizza?
Does he like pizza?
She doesn't plays tennis.
She doesn't play tennis.
He haves a dog.
He has a dog.
Everyone have a phone.
Everyone has a phone.
The news are bad.
The news is bad.
Neither of them know the answer.
Neither of them knows the answer.
The criteria for the award is strict.
The criteria for the award are strict.
Patrones de oraciones
[Name] ___ [Activity] every day.
She doesn't ___ because she ___.
It ___ like a good idea, but it ___ a lot of work.
Neither of them ___ to ___ that he ___.
Real World Usage
He says he's coming at 8.
My current manager relies on my reports.
She looks so happy in this photo!
My friend wants the burger, but he doesn't like onions.
The GPS says to turn left here.
The earth rotates on its axis.
¡Caza sujetos con 'S'!
he, she, it o una sola persona/cosa. Si es así, ¡casi seguro que el verbo necesita una «-s»! Es como un detective de verbos. She works in an office.
¡No confundas con sustantivos plurales!
he walks). Pero la «-s» en un sustantivo (nombre de algo) normalmente significa que hay muchos (como two dogs). ¡Son diferentes! Two cats but one cat sleeps.Escucha el sonido de la 'S'
she walks en lugar de she walk te ayudará a que tu oído se acostumbre y lo digas bien sin pensar. He loves pizza.Sonar natural es importante
She always helps me.
Practica con nombres
he/she/it, practica con nombres reales o cosas específicas. My friend studies o The dog barks te ayuda a conectar la regla con tu día a día más fácilmente. Maria sings well.Smart Tips
Hiss like a snake! Make sure you hear that 's' or 'z' sound at the end of the action.
Imagine 'does' is a thief that steals the 's' from the main verb.
Find the 'head' noun. Is it one man or many dogs? The verb matches the man!
Treat these words like 'It'. They always take an 's'.
Pronunciación
The Three Sounds of 'S'
The 's' ending can sound like /s/, /z/, or /iz/ depending on the last sound of the verb.
Statement Falling Intonation
He works ↘ here.
A standard factual statement.
Memorízalo
Mnemotecnia
He, She, It... the 'S' must fit!
Asociación visual
Imagine the letter 'S' is a tail that only grows on a verb when a single person (He/She) or a single thing (It) is standing in front of it.
Rhyme
I walk, you walk, we walk too. But He walks, She walks—that's what they do!
Story
In the Kingdom of Grammar, the 'S' is a special crown. Only the three royals—Prince He, Princess She, and the Royal Pet It—are allowed to wear the 'S' crown on their actions. If anyone else tries to wear it, the Grammar Police will stop them!
Word Web
Desafío
Look around the room. Find one person or one object. Say three things they are doing or three facts about them using the 'S' rule. (e.g., 'The lamp sits on the table. It looks bright. It costs ten dollars.')
Notas culturales
In the UK, collective nouns like 'the team' or 'the government' often take a plural verb ('The team are playing well'), whereas in American English, they almost always take a singular verb ('The team is playing well').
In AAVE, the third-person 's' is often omitted as part of the dialect's systematic grammar ('He go to the store'). This is a valid dialectal variation, not a 'mistake' within that context.
In 'International English' or 'ELF' (English as a Lingua Franca), the third-person 's' is often dropped by non-native speakers. While understood, it is still corrected in formal business writing.
The '-s' ending comes from the Northumbrian dialect of Old English, where it was '-es'.
Inicios de conversación
What does your best friend do for fun?
How does your favorite app work?
What happens if it rains on your wedding day?
How does your government handle environmental issues?
Temas para diario
Errores comunes
Test Yourself
She ___ a new book every week.
Find and fix the mistake:
My cat sleep all day.
Choose the correct sentence:
Score: /3
Ejercicios de practica
8 exercisesMy brother ___ in London.
She ___ (watch) movies every Friday.
Find and fix the mistake:
He don't like apples.
always / she / her / finishes / work
1. I, 2. He, 3. They, 4. It
Select the grammatically correct question.
The sun ___ (rise) in the east.
Find and fix the mistake:
The baby crys a lot.
Score: /8
Practice Bank
12 exercisesThe student always ___ their homework.
We ___ to the beach every summer.
My friends often plays soccer in the park.
The sun rise in the east.
Choose the correct sentence:
Choose the correct sentence:
Translate into English: 'She writes a letter.'
Translate into English: 'My dog barks loudly.'
Arrange these words into a sentence:
Arrange these words into a sentence:
Match the subjects with the correct verb form for 'to eat'.
Match the subjects with the correct verb form for 'to live'.
Score: /12
Preguntas frecuentes (8)
It's a historical leftover from Old English. Most other person-endings disappeared over time, but the third-person singular 's' survived. It helps distinguish the subject in a sentence.
No. Even if 'they' refers to a single person (singular they), it always takes the plural verb form: `They work here`, not `They works here`.
It is always `goes`. Verbs ending in '-o' like `go` and `do` require `-es`.
These are singular! You should say `Everyone likes pizza` and `Somebody knows the truth`.
English grammar doesn't like 'double marking'. Since the 's' is already on `does`, the main verb `like` doesn't need it. Think of `does` as the boss who takes the 's' for himself.
For the 's' rule, `has` is the main irregular verb. The verb `to be` is also irregular (`is`), but it's usually taught as its own rule.
No! In the past tense, the verb is the same for everyone: `I worked`, `He worked`, `They worked`. The 's' rule is only for the `Present Simple`.
Then the subject is 'They' (plural), so you do NOT add an 's'. `John and Mary work here`.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Presente de Indicativo (-a/-e)
Spanish changes the verb for every person; English only for the third person singular.
Présent de l'indicatif
English 's' is always pronounced, whereas French endings are often silent.
Präsens (-t)
German also has distinct endings for 'we' and 'you plural', which English does not.
Dictionary form (u-verb/ru-verb)
Japanese has zero person-based conjugation.
Al-Mudaari' (Present Tense)
Arabic distinguishes between 'he' and 'she' in the verb form; English uses 's' for both.
No conjugation
Chinese relies on context and time markers rather than verb endings.
Learning Path
Prerequisites
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