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Español de México · CDMX

Spanish Sentence Builder

Build vocabulary. Use verbs. Speak with confidence.
Offline practice + optional AI coach
Tu español, paso a paso

Learn the Spanish people use in Mexico City.

A practical workbook for everyday Mexican Spanish. Start with high-use verbs, practise them in context, build natural sentences and get AI feedback when you connect your secure Cloudflare Worker.

Choose today's practice length

There is no fixed daily requirement. Choose what fits your day.

Flexible practice
Your session will combine due vocabulary, a short grammar drill, sentence production and optional listening.
0verbs in your vocabulary bank
0verbs marked as known
0practice answers checked
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1. Vocabulary recall

Translate verbs in either direction, by category or in a shuffled mix.

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2. Sentence drills

Practise conjugations in context and translate useful everyday sentences.

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3. Word order

Arrange words into natural Spanish sentences.

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4. AI Sentence Coach

Write your own sentence and receive feedback on meaning, grammar and naturalness in Mexico City Spanish.

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CDMX context

Practise with cafés, markets, the Metro, neighbourhoods, work and everyday plans.

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5. Explore the verb bank

Browse the original 81 verbs plus a wider collection of practical everyday verbs.

Mexican Spanish settings: Uses tú, usted and ustedes; no vosotros. Prioritises everyday Mexican vocabulary such as platicar, manejar, rentar, colonia and carro, while explaining useful alternatives.

Vocabulary practice

Recall the infinitive verbs in either translation direction.

Ready
TRANSLATE INTO ENGLISH
pensar
Infinitive verb
Checked: 0 · Correct: 0
How difficult was that?Due for review: 0

Your review schedule adapts to how well you remembered each verb. “Again” brings it back sooner; “Easy” spaces it further apart.

Browse the verb bank

Search by Spanish or English meaning.

Spanish infinitiveEnglish meaningGroup

Sentence drills

Practise forms and translate full sentences in context.

COMPLETE THE SENTENCE
Yo ____ café por la mañana.

I drink coffee in the morning.

Required verb: tomar

Checked: 0 · Correct: 0
Tip: In Mexican Spanish, the subject pronoun is often omitted when the verb ending makes the subject clear. Both yo quiero and quiero are possible.

Build the sentence

Tap the words in the right order to make a natural sentence.

Sentence 1

I take the metro every day.

AI Sentence Coach

Write your own Spanish. Get feedback for contemporary Mexican Spanish, with a Mexico City focus.

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How it works: Choose a real-life situation or make your own. Practise several target verbs in one connected response. The coach checks whether you used each verb in a suitable form, whether your meaning is clear, and whether your Spanish sounds natural in Mexico City.
Beginner

You are ordering politely at a café in Mexico City. Say that you would like a coffee and something to eat.

Suggested verbs for this scenario:

On a Mac, hold Command (⌘) while clicking to select or deselect several verbs. The scenario starts with suggested verbs selected; you can change them.
AI checking requires internet and your private Cloudflare access code. Your sentence is sent to the OpenAI API for feedback; it is not saved in this workbook unless you choose to save your progress locally.

Progressive grammar pathway

Start with the present tense, then unlock new tenses as your confidence grows.

Stage 1 available
Stage 1 · Start here

Present tense

Regular verbs, irregular verbs, stem changes, spelling changes, reflexives and gustar.

  • Yo, tú, él/ella/usted
  • Nosotros/nosotras
  • Ellos/ellas/ustedes
Available now
Stage 2

Present progressive & immediate future

Estar + gerundio and ir a + infinitive for actions happening now and near-future plans.

Unlock after 30 correct practice answers and 15 verbs reviewed.

Stage 3

Talking about the past

Pretérito for completed events and imperfecto for habits, descriptions and background.

Unlock after Stage 2 and 80 correct practice answers.

Stage 4

Future & combining tenses

Simple future, conditional basics and longer stories combining time frames.

Unlock after Stage 3 and 150 correct practice answers.

Mexican Spanish grammar notes

Use tú, usted and ustedes. The workbook does not teach vosotros or vos. Subject pronouns are often omitted when the verb ending makes the subject clear.

For Mexico City examples, you'll see everyday expressions such as ¿Qué onda?, ahorita, platicar, manejar and quedar, with register notes where appropriate.

AI conversation practice

Have a short, interactive conversation in contemporary Mexico City Spanish.

Ready when connected

Choose a situation and start the conversation. The AI will play the other person and keep the dialogue going.

The AI responds in natural Mexican Spanish, adapts to your level and gives brief corrections. This feature uses API credits.

Listening & speaking

Listen to Mexican Spanish and practise saying words and sentences aloud.

Listen to a verb or phrase

The AI voice can be guided towards Mexican Spanish, but its available voices are optimised for English and may not reproduce a perfect CDMX accent. Your Mac may also have an es-MX system voice.

Speak and check what was heard

Record a short response in Spanish. The workbook transcribes it so you can review what the microphone recognised.

Microphone permission is requested only when you start recording. Keep recordings short (up to 30 seconds).

Speech recognition checks the words it heard; it is not a definitive accent score. Recording audio is sent to OpenAI for transcription.

Progress & setup

Your practice history is stored locally in this browser.

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0correct checks
0verbs marked as known

Connect the AI Sentence Coach

Enter the Cloudflare Worker URL and the private access code you will create as a Cloudflare Secret. Your OpenAI API key stays in Cloudflare and is never entered here.

The AI coach is optional. Vocabulary, sentence drills and word-order practice work offline.

Export your progress

Download a CSV of the verbs you have practised, plus your scores. This file is generated locally.

Privacy and security: Your OpenAI API key belongs only in Cloudflare's encrypted OPENAI_API_KEY secret. The private access code belongs in Cloudflare as APP_ACCESS_CODE and in this workbook's connection settings. Never put either secret in a public HTML file or share it.