How much exactly: mucho, poco, todo, alguno

The words 'many', 'few', 'all' and 'some' are called quantifiers, and they share one big trap: some agree with the noun, others do not. For example: “En mi clase hay muchos alumnos y pocos libros de texto” — There are many students in my class and few textbooks. A rule from the Spanish course: worked out on examples, not memorized as a wording.

Updated September 1, 2026 · Lingofly

How it works

The words 'many', 'few', 'all' and 'some' are called quantifiers, and they share one big trap: some agree with the noun, others do not.

Mucho and poco before a noun are adjectives, and they change for gender and number: muchos alumnos, muchas clases, poco tiempo, pocas notas. The same mucho after a verb is an adverb, and then it freezes: estudia mucho, duerme poco. The test is simple: if there is a noun nearby — agree; if only a verb — leave it alone.

Bastante means 'enough' and 'quite a lot' at once — it changes for number but not for gender: bastantes alumnos, bastante paciencia. Demasiado — 'too much', and it agrees all the way: demasiados deberes, demasiada tarea.

Todo demands an article after it, and this is the spot where the English habit of saying 'all day' with no article trips you up: not todo día but todo el día — 'all day'; todos los alumnos — 'all the students'. Without the article todo means 'everything' in general: lo sé todo.

'Some' and 'none' have short forms before a masculine singular noun: algún cuaderno, ningún error — the final -o drops off, leaving an accent behind. And remember the double negation: no tengo ningún libro — the no is obligatory; Spanish is not embarrassed by two negatives.

Approximation comes three ways: unos veinte alumnos — 'some twenty students', alrededor de cien euros — 'around a hundred euros', más o menos a las cinco — 'around five o'clock'. The first is the most colloquial, and unos there is not the article but exactly 'about'.

Table

How much exactly: mucho, poco, todo, alguno
wordagrees inbefore a nounafter a verb
muchogender and numbermuchas clasesestudia mucho
pocogender and numberpocos alumnoshabla poco
bastantenumber onlybastantes notascome bastante
demasiadogender and numberdemasiada tareatrabaja demasiado
todogender and number, plus the articletodo el cursolo sabe todo
algún / ningúngender and numberalgún cuaderno
unos (about)genderunos veinte euros

By example

  • En mi clase hay muchos alumnos y pocos libros de texto
    There are many students in my class and few textbooks
  • Todos los días repaso la materia media hora
    Every day I review the material for half an hour
  • El control dura unos cuarenta minutos, más o menos
    The test lasts some forty minutes, more or less

How the rule settles in your head

A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.

Frequently asked

How much exactly: how does it work in Spanish?

The words 'many', 'few', 'all' and 'some' are called quantifiers, and they share one big trap: some agree with the noun, others do not.

What does it look like in an example sentence Spanish?

“En mi clase hay muchos alumnos y pocos libros de texto” — There are many students in my class and few textbooks. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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