A1. Lesson 15: Modal Verbs + Possessive and Descriptive Adjectives

🎯 Goal: Learn to conjugate and use modal verbs (poder, deber, querer, necesitar, tener que) in the present tense, followed by infinitives. Master possessive adjectives (mi, tu, su, nuestro/a, etc.) to express ownership. Expand vocabulary with new adjectives to describe people and objects.

A1. Lesson 15: Modal Verbs, Possessive Adjectives, and New Adjectives

🧠 Grammar Explanation: Modal Verbs in Spanish

In Spanish, certain verbs like poder, deber, querer, and necesitar are often used like modal verbs because they are followed by an infinitive and express ability, obligation, etc.

This lesson covers 4 key modal verbs: 

  • poder – can/to be able to
  • deber – should/must
  • querer – to want
  • necesitar – to need

They are conjugated in the present tense, but note that poder and querer are irregular (they change their stem).

Modal Verb Conjugation:

Subjectpoderdeberquerernecesitar
yopuedodeboquieronecesito
puedesdebesquieresnecesitas
él/ella/ustedpuededebequierenecesita
nosotros/aspodemosdebemosqueremosnecesitamos
vosotros/aspodéisdebéisqueréisnecesitáis
ellos/ellas/ustedespuedendebenquierennecesitan

📝 Examples:

  • Puedo nadar. – I can swim.
  • Debes estudiar. – You should study.
  • Quiere comer. – She wants to eat.
  • Necesitamos descansar. – We need to rest.

🧩 Grammar Quiz: Modal Verbs + Infinitives

Test your understanding of modal verb conjugation with this quiz, using poder, deber, querer, and necesitar followed by infinitives.


🧠 Grammar Explanation: Possessive Adjectives

Possessive adjectives indicate ownership and are placed before the noun. They agree in number (singular/plural) and, for nuestro/vuestro, gender with the noun, not the owner.

PronounSingularPlural
yomimis
tutus
él / ella /ustedsusus
nosotros(as)nuestro / nuestranuestros / nuestras
vosotros(as)vuestro / vuestravuestros / vuestras
ellos / ellas / ustedessusus 
SingularEnglishPluralEnglish
mi casamy housemis librosmy books
tu amigoyour friendtus zapatosyour shoes
su librohis booksus ideastheir ideas
nuestro perroour dognuestros cochesour cars
vuestra hermanayour sistervuestras amigasyour friends (female)
su madrehis mothersus padrestheir parents

📝 Examples:

  • Mi casa es grande. – My house is big.
  • Tus zapatos son nuevos. – Your shoes are new.
  • Nuestra amiga es simpática. – Our friend is nice.

❗️Note: Su can mean “his,” “her,” “their,” or “your” (formal), so context clarifies the owner.


🎯Practice Activities: Possessive Adjectives

Practice using possessive adjectives correctly with this quiz.


🔤 Vocabulary: Simple Adjectives

Learn 20 essential Spanish adjectives to describe people, objects, and feelings with confidence. This collection covers physical characteristics, personality traits, emotions, and object descriptions.

Spanish AdjectiveEnglish Translation
alto tall
bajo short
joven young
mayor old (person)
simpático nice
blanco white
negro black
rojo red
verde green
azul blue
grande big
pequeño small
largo long
corto short
barato cheap
caro expensive
fuerte strong
débil weak
nuevo new
viejo old (object/person)
bueno good
malo bad
importante important

Each adjective is presented with a practical example phrase that demonstrates proper usage in context, helping you understand how to incorporate these descriptive words naturally into your Spanish conversations and writing.

Mi hermano es alto. My brother is tall.
La mesa es baja. The table is short.
Soy un estudiante joven. I am a young student.
Mi abuela es mayor. My grandmother is elderly.
Mi amiga es simpática. My friend is nice/friendly.
Tengo un gato negro. I have a black cat.
Compro una manzana roja. I buy a red apple.
La planta es verde. The plant is green.
Vivo en una casa grande. I live in a big house.
Mi coche es pequeño. My car is small.
Llevo un vestido largo. I wear a long dress.
El pantalón es corto. The pants are short.
Encuentro un libro barato. I find a cheap book.
Su reloj es caro. His/Her watch is expensive.
Escucho un sonido fuerte. I hear a loud sound.
La señal es débil. The signal is weak.
Tengo un teléfono nuevo. I have a new phone.
Leo un libro viejo. I read an old book.
Es un restaurante bueno. It’s a good restaurant.
Tengo un día malo. I have a bad day.
Es una reunión importante. It’s an important meeting.

↩️ Flashcard: 20 Verbs

Explore flashcards on the website to memorize adjectives. Click to reveal translations and examples.

alto
tall
1 of 22

Practice by reading each Spanish phrase aloud, then try to translate it to English from memory. Check the back of the card if you need help. Continue reviewing until you’ve learned them all!

Mi hermano es alto.
My brother is tall.
1 of 21

🧩 Vocabulary Quiz: Image-Based

Test your knowledge of adjectives by matching them to the correct image. Look at a picture and choose the correct word from three options.


✍️ Listening Quiz

Complete the sentences by typing the missing words.


🗣️ Shadowing: Repeat After the Audio

Practice pronunciation with 10 sentences combining modal verbs, possessive adjectives, and new adjectives.

⬇️ Click to show transcript & translation

Yo quiero viajar a España. – I want to travel to Spain.

Necesitas limpiar tu habitación. – You need to clean your room.

Debemos llamar a nuestra abuela. – We should call our grandmother.

Ellos pueden cocinar en su casa grande. – They can cook in their big house.

Yo puedo comprar un libro barato. – I can buy a cheap book.

Mi amiga quiere un gato negro. – My friend wants a black cat.

Debes leer mi libro nuevo. – You should read my new book.

Necesitamos una mesa baja. – We need a low table.

Su perro pequeño es muy simpático. – Their small dog is very friendly.

Yo quiero asistir a una reunión importante. – I want to attend an important meeting.


📚 Reading: Planning a Weekend

This dialogue between two friends uses modal verbs, possessive adjectives, and new adjectives to discuss weekend plans.

Lucía: Hola, Ana.¿Qué quieres hacer este fin de semana?

Ana: ¡Hola! Quiero visitar a mis abuelos. Son mayores, pero muy simpáticos.

Lucía: ¡Qué bien! Yo debo limpiar mi casa. Mi cuarto es pequeño, pero el salón es grande.

Ana: Yo también debo ayudar en casa. Mi madre necesita comprar una mesa nueva. La mesa vieja es muy larga y un poco fea.

Lucía: Mi padre quiere comprar una televisión. La nuestra es vieja y pequeña. Él quiere una televisión grande y barata. Pero mi madre prefiere una cara pero buena.

Ana: El sábado por la tarde podemos ir al parque. Mi perro es joven y muy fuerte. Necesita correr.

Lucía: ¡Perfecto! El mío es débil y bajo, pero simpático.

⬇️ Click to show translation of text

Lucía: Hi, Ana. What do you want to do this weekend?

Ana: Hi! I want to visit my grandparents. They’re old but very nice.

Lucía: How nice! I must clean my house. My room is small, but the living room is big.

Ana: I also need to help at home. My mother needs to buy a new table. The old table is very long and a bit ugly.

Lucía: My father wants to buy a TV. Ours is old and small. He wants a big, cheap TV. But my mother prefers an expensive but good one.

Ana: On Saturday afternoon we can go to the park. My dog is young and very strong. He needs to run.

Lucía: Perfect! Mine is weak and short, but friendly.


🧭 The Word “PERO” in Spanish

The text above contains a sentence: “Pero mi madre prefiere una cara pero buena”.

“Pero” is a coordinating conjunction in Spanish, equivalent to “but” in English. It is used to express contrast or limitation within a sentence.

  • It connects two clauses or ideas with opposing meanings.
  • A comma is usually placed before “pero” when it starts an independent clause.
  • “Pero” is invariable – it does not change based on gender or number.

📌 Examples:

  • Quiero ir al cine, pero no tengo dinero. – I want to go to the cinema, but I don’t have money.
  • Hace sol, pero hace frío. – It’s sunny, but it’s cold.
  • Me gusta el té, pero prefiero el café. – I like tea, but I prefer coffee.

🎧 Listening: Weekend Plans

Listen to a short dialogue (30-40 seconds) where two friends discuss their weekend plans using modal verbs, possessive adjectives, and new adjectives.

⬇️ Click to show transcript & translation

Pablo: Hola, Carla. ¿Qué quieres hacer el sábado?

Carla: Hola, Pablo. Quiero descansar en mi casa. Mi sala es grande y cómoda. Y tengo un gato negro.

Pablo: Yo puedo visitar tu casa. Mi hermano mayor también quiere venir.

Carla: ¡Genial! Pero debemos comprar una mesa baja. Nuestra sala necesita una.

Pablo: Hi, Carla. What do you want to do on Saturday?

Carla: Hi, Pablo. I want to relax at home. My living room is big and comfortable. And I have a black cat.

Pablo: I can visit your house. My older brother wants to come too.

Carla: Great! But we need to buy a coffee table. Our living room needs one.


🧠 Grammar Explanation: Tener Que

The phrase tener que + infinitive is one of the most common and useful structures in Spanish. It is used to express an obligation, necessity, or something that you have to or need to do.

It closely matches the English ‘have to’ and is used in almost all the same contexts.

  • I have to study. → Tengo que estudiar.
  • She has to work. → Ella tiene que trabajar.

The obligation can be based on external circumstances, rules, or personal needs.

🔑 STRUCTURE: Tener + que + infinitive

Example: Tengo que descansar. – I have to rest.

To use this structure correctly, you must know how to conjugate tener:

PronounConjugationExample
yotengoTengo que trabajar.
tienesTienes que comer.
él/ella/ustedtieneTiene que descansar.
nosotrostenemosTenemos que ir.
vosotrostenéisTenéis que escuchar.
ellos/ellas/ustedestienenTienen que pagar.

📝 Practice Examples:

  • ¿Qué tienes que hacer hoy? — What do you have to do today?
  • Juan tiene que limpiar su habitación. — Juan has to clean his room.
  • Tenemos que llegar temprano al aeropuerto. — We have to arrive early at the airport.
  • Los estudiantes tienen que hacer la tarea. — The students have to do the homework.

⚠️ After tener que, use the infinitive only — never add another subject pronoun or conjugate the second verb.

Tengo que yo estudiar → ✅ Tengo que estudiar


🧩 Quiz: Modal Verbs

Practice modal verbs with this quiz. Complete the sentences using the dropdown menu.


✍️ Quiz: Possessive Adjectives

Practice possessive adjectives with this quiz. Complete the sentences by typing the missing words.


↩️ Flashcard: Review Vocabulary

Expand your Spanish verb knowledge with these interactive flashcards. Review each card and challenge yourself to recall the Spanish verb forms and their meanings.

hablar
to speak
1 of 22

comer
to eat
1 of 16

vivir
to live
1 of 15

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