What form of gustar do you use with a singular noun?

When using "gustar" with a singular noun, you use the third person singular form: gusta.

Here's why:

* Gustar is a verb that means "to be pleasing to," and it's used to express liking or disliking something.

* It's an impersonal verb, meaning it doesn't have a specific subject (like "I," "you," "he," etc.). Instead, the object of the verb is what receives the action of "being pleasing."

* Because it's impersonal, the verb conjugation doesn't change based on the person performing the action. It always stays in the third person singular form: gusta.

Here are some examples:

* A mí me gusta el chocolate. (I like chocolate.)

* A ella le gusta la música clásica. (She likes classical music.)

* A ellos les gusta la comida picante. (They like spicy food.)

Note: You always use the indirect object pronoun (me, te, le, nos, os, les) before "gusta" to specify who likes the thing.