Fortalecerse Present Tense in Spanish

fortalecerse means "to grow stronger" in English, and the present tense is the form you use when you talk about what happens regularly, what is generally true, and what is happening now. This page gives you the full present-tense table for fortalecerse, explains how the tense is formed for this verb, shows when to use it, contrasts it with the closest tense, and finishes with examples, the mistakes learners actually make, a quiz and answers to the most common questions. A natural example is: Cada día, yo me fortalezco con el ejercicio diario. — "Every day, I grow stronger with daily exercise." Once you can say that sentence confidently, try changing the person and the complement using the table below.

The present tense of fortalecerse: full table

Every person of fortalecerse in the present tense. The gerund is fortaleciéndose and the past participle is fortalecido.

Person Form
yo me fortalezco
tú te fortaleces
él/ella/Ud. se fortalece
nosotros/as nos fortalecemos
vosotros/as os fortalecéis
ellos/ellas/Uds. se fortalecen

The gerund of fortalecerse is fortaleciéndose and the past participle is fortalecido. The gerund is used for the progressive (estoy fortaleciéndose), and the participle is used with haber in all perfect tenses (me he fortalecido). Because fortalecerse is reflexive, every present-tense form carries its pronoun in front of it: me, te, se, nos, os, se.

How the present tense of fortalecerse is formed

The present tense of fortalecerse is built from the stem fortalec- plus the regular -er endings: -o, -es, -e, -emos, -éis, -en. Take the infinitive, remove the -er ending, and add the ending that matches the person: yo me fortalezco, tú te fortaleces, él se fortalece, nosotros nos fortalecemos, vosotros os fortalecéis and ellos se fortalecen. Once you know the pattern for one regular -er verb, you can apply it to hundreds of others.

Person Ending Form
yo -o me fortalezco
tú -es te fortaleces
él/ella/Ud. -e se fortalece
nosotros/as -emos nos fortalecemos
vosotros/as -éis os fortalecéis
ellos/ellas/Uds. -en se fortalecen

Watch the spelling: the c becomes zc before o and a, so the yo form is fortalezco and the subjunctive forms start with zc, for example fortalezca.

fortalecerse is a reflexive verb, so every form carries a reflexive pronoun in front of it: me, te, se, nos, os, se. The pronoun always goes before the conjugated verb in the present tense. The gerund is fortaleciéndose, with the pronoun attached to the end, and the past participle is fortalecido.

Two more forms belong with this tense. The gerund is fortaleciéndose, used for the progressive with estar: estoy fortaleciéndose. The past participle is fortalecido, used with haber in all perfect tenses: me he fortalecido. Both forms appear constantly, so they are worth memorising on their own.

When to use the present tense with fortalecerse

1. Routines and habits

The present tense describes what happens regularly. For example: Cada día, yo me fortalezco con el ejercicio diario. — "Every day, I grow stronger with daily exercise." The complement in this sentence is about daily exercise, which is exactly the kind of situation where you will hear fortalecerse in the present tense.

2. Things happening now

The present tense describes what is happening at this moment. For example: Ahora, tú te fortaleces con la comida sana. — "Now, you grow stronger with healthy food." The complement in this sentence is about healthy food, which is exactly the kind of situation where you will hear fortalecerse in the present tense.

3. General truths

The present tense states facts that are generally true, not tied to one moment. For example: Normalmente, él se fortalece después de la enfermedad. — "Normally, he/she grows stronger after the illness." The complement in this sentence is about the illness, which is exactly the kind of situation where you will hear fortalecerse in the present tense.

4. Plans and the near future

The present tense is also used for plans that are already fixed, especially with a time expression. Spanish speakers often say the present where English would use a future: the plan is so certain that it feels like a fact. For example: Mañana, nosotros nos fortalecemos con el trabajo en el campo. — "Tomorrow, we grow stronger with work in the fields." The complement in this sentence is about work in the fields, which is exactly the kind of situation where you will hear fortalecerse in the present tense.

5. Frequent actions

With words such as siempre, a menudo and todos los días, the present tense shows how often something happens. For example: Siempre, ellos se fortalecen con el ejercicio diario. — "Always, they grow stronger with daily exercise." The complement in this sentence is about daily exercise, which is exactly the kind of situation where you will hear fortalecerse in the present tense.

Present vs preterite: fortalecerse

The closest tense to the present is the preterite, and learners mix them up constantly. The rule is simple: the present describes habits, routines and general truths, while the preterite describes one action that started and finished in the past. The three pairs below show the difference with fortalecerse.

Pair 1

  • Present (habit): Cada día, yo me fortalezco con el ejercicio diario. — "Every day, I grow stronger with daily exercise."
  • Preterite (one finished action): Ayer, yo me fortalecí con el ejercicio diario. — "Yesterday, I grew stronger with daily exercise."

The first sentence describes something that happens regularly. The second describes something that happened once, yesterday, and is now finished. If you can add cada día, use the present; if you can add ayer, use the preterite.

Pair 2

  • Present (habit): Cada día, tú te fortaleces con la comida sana. — "Every day, you grow stronger with healthy food."
  • Preterite (one finished action): Ayer, tú te fortaleciste con la comida sana. — "Yesterday, you grew stronger with healthy food."

The first sentence describes something that happens regularly. The second describes something that happened once, yesterday, and is now finished. If you can add cada día, use the present; if you can add ayer, use the preterite.

Pair 3

  • Present (habit): Cada día, él se fortalece después de la enfermedad. — "Every day, he/she grows stronger after the illness."
  • Preterite (one finished action): Ayer, él se fortaleció después de la enfermedad. — "Yesterday, he/she grew stronger after the illness."

The first sentence describes something that happens regularly. The second describes something that happened once, yesterday, and is now finished. If you can add cada día, use the present; if you can add ayer, use the preterite.

Examples: fortalecerse in the present tense

These eight sentences show fortalecerse in the present tense with a different person each time. Read them aloud, then try changing the person and the complement to make your own versions.

  1. Yo me fortalezco con el ejercicio diario. — "I grow stronger with daily exercise."
  2. Tú te fortaleces con la comida sana. — "you grow stronger with healthy food."
  3. Él se fortalece después de la enfermedad. — "he/she grows stronger after the illness."
  4. Nosotros nos fortalecemos con el trabajo en el campo. — "we grow stronger with work in the fields."
  5. Vosotros os fortalecéis con el ejercicio diario. — "you (plural) grow stronger with daily exercise."
  6. Ellos se fortalecen con la comida sana. — "they grow stronger with healthy food."
  7. Yo me fortalezco después de la enfermedad. — "I grow stronger after the illness."
  8. Tú te fortaleces con el trabajo en el campo. — "you grow stronger with work in the fields."

Common mistakes with fortalecerse in the present tense

Mistake 1: Forgetting the zc spelling change

  • Wrong: Yo me fortaleco con el ejercicio diario.
  • Right: Yo me fortalezco con el ejercicio diario.
  • Why: In the present tense the c becomes zc before o: the yo form is fortalezco, never fortaleco. The other persons keep the plain c: fortaleces, fortalece.

Mistake 2: Forgetting the reflexive pronoun

  • Wrong: Yo fortalezco con el ejercicio diario.
  • Right: Yo me fortalezco con el ejercicio diario.
  • Why: fortalecerse is reflexive, so the pronoun comes before the verb: me fortalezco. The bare form alone is not a complete reflexive sentence.

Mistake 3: Using the present tense for yesterday

  • Wrong: Ayer, yo me fortalezco con la comida sana.
  • Right: Ayer, yo me fortalecí con la comida sana.
  • Why: Ayer means yesterday, so the action is finished and needs the preterite: Ayer, yo me fortalecí con la comida sana. — "Yesterday, I grew stronger with healthy food." The present tense is for habits and routines, not for yesterday.

Mistake 4: Using the present tense for a past habit

  • Wrong: Antes, yo me fortalezco después de la enfermedad.
  • Right: Antes, yo me fortalecía después de la enfermedad.
  • Why: Antes means before, in the past, so a past habit needs the imperfect: Antes, yo me fortalecía después de la enfermedad. — "In the past, I used to grow stronger after the illness." The present tense describes what happens now, not what used to happen.

Mistake 5: Using the él form for nosotros

  • Wrong: Nosotros nos fortalece con el ejercicio diario.
  • Right: Nosotros nos fortalecemos con el ejercicio diario.
  • Why: The person and the ending must match: nosotros takes fortalecemos, while fortalece belongs to él and ella. Check the person first, then choose the form.

Quiz: the present tense of fortalecerse

Test yourself with eight questions on the present tense of fortalecerse. The answers are explained, so read them even when you get a question right.

1. What is the yo form of fortalecerse in the present tense?

  • (a) fortalece
  • (b) fortalecemos
  • (c) fortalezco
  • (d) fortaleces

Answer: (c) fortalezco. The yo form is fortalezco. The other options are other persons, so check the person before you answer.

2. What is the tú form of fortalecerse in the present tense?

  • (a) fortalecemos
  • (b) fortaleces
  • (c) fortalezco
  • (d) fortalece

Answer: (b) fortaleces. The tú form is fortaleces. The other options are other persons, so check the person before you answer.

3. What is the él/ella form of fortalecerse in the present tense?

  • (a) fortalece
  • (b) fortalezco
  • (c) fortaleces
  • (d) fortalecemos

Answer: (a) fortalece. The él/ella form is fortalece. The other options are other persons, so check the person before you answer.

4. What is the nosotros form of fortalecerse in the present tense?

  • (a) fortalezco
  • (b) fortaleces
  • (c) fortalece
  • (d) fortalecemos

Answer: (d) fortalecemos. The nosotros form is fortalecemos. The other options are other persons, so check the person before you answer.

5. What is the ellos/ellas form of fortalecerse in the present tense?

  • (a) fortaleces
  • (b) fortalece
  • (c) fortalecen
  • (d) fortalezco

Answer: (c) fortalecen. The ellos/ellas form is fortalecen. The other options are other persons, so check the person before you answer.

6. Complete the sentence: Cada día, yo ___ con el ejercicio diario.

  • (a) fortalecemos
  • (b) fortalezco
  • (c) fortaleces
  • (d) fortalece

Answer: (b) fortalezco. The sentence needs the yo form fortalezco (Every day, I grow stronger with daily exercise.)

7. What is the gerund of fortalecerse?

  • (a) fortalecerse
  • (b) fortaleciendo
  • (c) fortalecido
  • (d) fortalezco

Answer: (b) fortaleciendo. The gerund is fortaleciendo, used for the progressive: me estoy fortaleciendo.

8. Which sentence describes a habit, something you do regularly?

  • (a) Cada día, yo me fortalezco con la comida sana.
  • (b) Antes, yo me fortalecía con la comida sana.
  • (c) Ayer, yo me fortalecí con la comida sana.
  • (d) Mañana, yo me fortaleceré con la comida sana.

Answer: (a) Cada día, yo me fortalezco con la comida sana.. Cada día, yo me fortalezco con la comida sana. (Every day, I grow stronger with healthy food.) describes a habit, so it uses the present tense. Ayer, yo me fortalecí con la comida sana. is a single completed action, and Mañana, yo me fortaleceré con la comida sana. is in the future.

Frequently asked questions about the present tense of fortalecerse

Is fortalecerse regular in the present tense?

Almost. fortalecerse is a spelling-changing (c → zc before o and a) -er verb, so its endings are regular, but watch the spelling: Watch the spelling: the c becomes zc before o and a, so the yo form is fortalezco and the subjunctive forms start with zc, for example fortalezca.

How do you say 'grow stronger' in a sentence?

Use the present tense with a complement: Cada día, yo me fortalezco con el ejercicio diario. — "Every day, I grow stronger with daily exercise." Change the person using the table above, and change the complement to talk about your own life.

When do I use the present tense instead of the preterite with fortalecerse?

Use the present for habits and routines: Cada día, yo me fortalezco con la comida sana. — "Every day, I grow stronger with healthy food." Use the preterite for one finished action: Ayer, yo me fortalecí con la comida sana. — "Yesterday, I grew stronger with healthy food." If the action happens regularly, choose the present; if it happened once and is finished, choose the preterite.

Can I use the present tense for the future with fortalecerse?

Yes, when the plan is already fixed. Mañana, nosotros nos fortalecemos con el trabajo en el campo. — "Tomorrow, we grow stronger with work in the fields." Spanish often uses the present for a plan that feels certain, where English would use the future. Add a time word such as mañana so the listener knows you mean the future.

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