Pongo mis gafas en el estuche antes de dormir.

I put my glasses in the case before sleeping.

Breakdown of Pongo mis gafas en el estuche antes de dormir.

• yo: I
• en: in
• mi: my
• dormir: to sleep
• antes de: before
• poner: to put
• las gafas: the glasses
• el estuche: the case

Questions & Answers about Pongo mis gafas en el estuche antes de dormir.

Why is it pongo and not pono?

Because poner is irregular in the first person singular of the present tense. It’s yo pongo, not “yo pono.” The rest of the present is regular: tú pones, él/ella/usted pone, nosotros ponemos, ustedes/ellos ponen.

Could I use another verb instead of poner?

Yes, each option adds a nuance:

• guardar: to put away/store. Very common for routines. Example: Guardo mis gafas en el estuche…
• meter: to put into/insert. Focus on putting inside. Meto mis gafas en el estuche…
• dejar: to leave. Emphasizes leaving them there. Dejo mis gafas en el estuche…
• colocar: to place/position. A bit more formal/precise than poner.

All are acceptable in context; poner and guardar are the most neutral everyday choices.

Why is it mis gafas and not las gafas?

Both are possible, but they’re used in different typical contexts:

• mis gafas explicitly marks possession when there’s no reflexive verb. That’s your sentence’s situation.
• With clothing/body items and reflexive verbs, Spanish often uses the definite article: Me quito las gafas (I take my glasses off), Me pongo las gafas (I put my glasses on).

Is gafas the usual word in Latin America?

It’s understood everywhere, but preferences vary:

• Many countries (Mexico, Chile, Peru, much of Central and parts of South America): lentes.
• Argentina, Uruguay, Paraguay: anteojos.
• Spain: gafas.
• Caribbean notes: lentes is common; espejuelos appears in Puerto Rico and parts of Cuba. For local flavor you can say: Pongo mis lentes… or Pongo mis anteojos… The rest of the sentence stays the same.

Why not los gafas? What’s the gender/number here?

gafas is feminine plural, so use las gafas and mis gafas. If you use other words:

• lentes is usually masculine plural: los lentes, mis lentes.
• anteojos is masculine plural: los anteojos, mis anteojos.

Can I say una gafa for a pair of glasses?

No. A pair of glasses is plural in Spanish:

• unas gafas, unos lentes, unos anteojos. Singular forms refer to a single lens/device: un lente (one lens), un anteojo (rarely used for a single eyepiece).

Why el estuche and not mi estuche or un estuche?

el estuche implies a specific, known case (your usual glasses case). You could also say:

• mi estuche (my case),
• el estuche de mis gafas (my glasses case),
• un estuche (some case, non‑specific). Choose based on how specific you want to be.

Is estuche the right word for case? What about funda?

• estuche is the general word for a case (often hard/semi‑hard), including glasses cases.
• funda is a soft cover/sleeve (also used for phone/pillowcases). For a soft slip‑case, funda can be natural. You’ll hear both depending on the type of case.

Why en el estuche and not dentro de el estuche?

• en el estuche is the standard way to say in the case.
• dentro de adds emphasis on inside: dentro del estuche (note the contraction del). Both are correct; en is the most neutral. Avoid mixing forms like “dentro de el”; it must be del.

Does en + el contract the way a + el becomes al?

No. Only a + el → al and de + el → del. en + el stays en el.

Why antes de dormir and not antes de que dormir?

Use antes de + infinitive when it’s the same subject and you’re using a verbal noun: antes de dormir. Use antes de que + subjunctive with a full clause: antes de que me duerma or antes de que él duerma. It’s never antes de que dormir (after de que, you need a conjugated verb).

Should it be dormir or dormirme?

Both are possible, with a nuance:

• antes de dormir: before sleeping (general).
• antes de dormirme: before I fall asleep (focus on the moment of drifting off). Both are common in everyday speech.

Why not me pongo here? What’s the difference between poner and ponerse?

• poner
  • object: to put/place something somewhere. Pongo mis gafas en el estuche = I put my glasses in the case.
• ponerse
  • item: to put something on oneself. Me pongo las gafas = I put my glasses on. So me pongo would be wrong for putting them into the case.

Can I replace mis gafas with a pronoun?

Yes, use the direct object pronoun las (feminine plural):

• Las pongo en el estuche antes de dormir.
• With an infinitive/gerund, you can attach or place before the auxiliary: Voy a ponerlas / Las voy a poner en el estuche.
• Commands: Ponlas en el estuche (affirmative), No las pongas en la mesa (negative).

Can I move antes de dormir to the beginning?

Yes: Antes de dormir, pongo mis gafas en el estuche. Add a comma after the introductory phrase.

Does the present tense here mean a habit? When would I use estoy poniendo?

Yes. Pongo… normally expresses a habit/routine. Use estoy poniendo… only when it’s happening right now: Ahora mismo estoy poniendo mis gafas en el estuche.