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Present tense: -er & -ir verbs

Grade 9 · Spanish · Free lesson

¡Hola! Today we are exploring how to use Spanish verbs that end in -er and -ir. You will learn to change their endings to talk about what people are doing right now!

Every Spanish verb has a starting form called an infinitive. Verbs like comer (to eat) and vivir (to live) end in -er and -ir, and we must change these endings to match who is doing the action.

to learn

To conjugate these verbs, we drop the -er or -ir ending to find the stem. Then, we add a new ending that matches our subject, like adding -o for 'yo' (I).

comercomoStep 1: Drop "-er"Step 2: Add "-o" for I (yo)

The endings for -er and -ir verbs are almost identical. The only difference is in the nosotros (we) form, where -er verbs use -emos and -ir verbs use -imos.

comer (we eat)comemosvivir (we live)vivimos
✏️ Worked example

Analyze the sentence "Ellos viven en Madrid" (They live in Madrid) and justify why "viven" is the correct form of the verb "vivir" (to live).

  1. Identify the subject of the sentence. Here, the subject is 'ellos' (they - masculine/mixed group).
  2. Identify the infinitive verb we want to use. The verb is 'vivir' (to live), which is an -ir verb.
  3. Find the stem of the verb by dropping the -ir ending. Dropping -ir from 'vivir' gives us the stem 'viv-'.
  4. Look up the ending for 'ellos' for -ir verbs in the present tense. The ending is -en.
  5. Combine the stem 'viv-' with the ending '-en' to get 'viven'. This matches our sentence perfectly, proving it is correct!
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