Answer '¿lo tienes?' like a local — swap nouns for pronouns, out loud.
Lo, la, los, las replace a noun you've already mentioned, and they match its gender and number: ¿el libro? Lo tengo aquí; ¿las llaves? Las dejé en la mesa. The pronoun goes before a conjugated verb — lo tengo, no la conozco — never after. With an infinitive or gerund you get two equally correct options: voy a comprarlo = lo voy a comprar. And lo can stand for a whole idea, not just a masculine noun — that's the lo in lo siento and ya lo sé.
Below: the question-and-answer pairs these pronouns power, the placement slips that sound off, and a way to practise them in live back-and-forth — no sentence-transformation worksheets.
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Regional Spanish
Textbooks teach one word. Locals use several — pick your region's and stay consistent.
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The part no drill site can do
Carla
Your grammar teacher for this pack
In the Lo Tengo lessons nothing gets transformed on paper — Carla just talks to you the way Spanish actually works, in question-and-answer. She asks if you have your passport, your keys, your phone, and you answer without repeating the noun: sí, lo tengo… las dejé en la mesa. She hands you voy a comprar el libro and asks for both versions — voy a comprarlo, lo voy a comprar. Then the personal a: veo a María becomes la veo — out loud, until dropping the noun feels natural instead of daring.
Blank mid-sentence and nothing bad happens — she waits. That's the practice, without unnecessary judgement.
Quick answers
Four: lo (masculine singular), la (feminine singular), los and las (plurals). Match the noun you're replacing — el libro → lo, las llaves → las. When in doubt, check the article.
Before a conjugated verb, always: lo veo todos los días, no la conozco, ¿lo quieres? Saying tengo lo instead of lo tengo is the classic word-order slip.
Both — and both are equally common. With infinitives and gerunds the pronoun can attach to the end or move before the helper verb: estoy leyéndolo = lo estoy leyendo. Pick whichever comes out first.
Because lo can stand in for an abstract idea or the whole situation, not just a masculine noun. Lo siento ≈ I feel it (what happened); ya lo sé = I already know (that); lo entiendo todo = I understand it all.
When the direct object is a specific person, the full sentence takes a: veo a María, ¿conoces a mi hermano? Once you swap in the pronoun the a disappears: la veo, sí, lo conozco.