quevsde que
/KEH/
/deh KEH/
💡 Quick Rule
Ask the verb a question. If the answer is 'WHAT?', use 'que'. If it's 'OF WHAT?', use 'de que'.
Think: 'Pienso ¿QUÉ?' -> 'Pienso QUE...' vs. 'Me acuerdo ¿DE QUÉ?' -> 'Me acuerdo DE QUE...'
- This isn't about exceptions, but about knowing which verbs need 'de'. Common ones are: alegrarse de, darse cuenta de, estar seguro de, acordarse de.
📊 Comparison Table
| Context | que | de que | Why? |
|---|---|---|---|
| Thinking vs. Being Convinced | Pienso que es correcto. | Me convenzo de que es correcto. | You 'think WHAT?', but you 'convince yourself OF WHAT?' |
| Noticing vs. Realizing | Noté que estaba triste. | Me di cuenta de que estaba triste. | You 'notice WHAT?', but the set phrase is 'darse cuenta DE' (to realize OF WHAT?). |
| Certainty | Es evidente que no quiere ir. | Estoy seguro de que no quiere ir. | The impersonal 'Es evidente' connects directly, but the personal 'Estoy seguro' needs 'de'. |
| Remembering | Recuerdo que llovía ese día. | Me acuerdo de que llovía ese día. | The verb 'recordar' doesn't need 'de', but its reflexive cousin 'acordarse' always does. |
✅ When to Use "que" / de que
que
Connects a verb directly to an idea. Used when the verb answers the question 'what?'.
/KEH/
Verbs of thinking/saying
Pienso que es una buena idea.
I think (what?) that it's a good idea.
Verbs of perception
Veo que has llegado.
I see (what?) that you have arrived.
Verbs of certainty (in the positive)
Creo que va a llover.
I believe (what?) that it's going to rain.
Impersonal expressions
Es importante que estudies.
It is important (what?) that you study.
de que
Connects an idea to a verb/expression that requires the preposition 'de'. Used when the verb answers 'of what?'.
/deh KEH/
Verbs of emotion/reaction
Me alegro de que vengas.
I'm happy (of what?) that you're coming.
Verbs of remembering/forgetting
Me acuerdo de que lo vi.
I remember (of what?) that I saw it.
Expressions of certainty/doubt
Estoy seguro de que funcionará.
I am sure (of what?) that it will work.
Verbs of realization
Me di cuenta de que era tarde.
I realized (of what?) that it was late.
🔄 Contrast Examples
With "que":
Pienso que tienes razón.
I think (what?) that you're right.
With "de que":
Estoy seguro de que tienes razón.
I'm sure (of what?) that you're right.
The Difference: The key is the verb or expression before the 'que'. 'Pensar' connects directly, while the expression 'estar seguro' must be followed by 'de'.
With "que":
Recuerdo que la película era buena.
I remember (what?) that the movie was good.
With "de que":
Me acuerdo de que la película era buena.
I remember (of what?) that the movie was good.
The Difference: These two verbs mean the same thing but have different grammar. 'Recordar' uses 'que', while 'acordarse' always uses 'de que'.
With "que":
Tengo la sensación que algo va a pasar.
I have the feeling (what?) that something is going to happen.
With "de que":
Tengo la esperanza de que algo bueno pase.
I have the hope (of what?) that something good happens.
The Difference: This pattern also applies to nouns. You have a 'sensación QUE', but you have 'esperanza DE QUE' or 'miedo DE QUE'.
🎨 Visual Comparison
A brain asking a question to choose between 'que' and 'de que'.
Your brain's question determines the answer. Is it a direct 'WHAT?' or an indirect 'OF WHAT?'
⚠️ Common Mistakes
Pienso de que deberíamos irnos. (Dequeísmo)
Pienso que deberíamos irnos.
This is the classic error of 'dequeísmo'. The verb 'pensar' answers the question 'what?' ('¿Qué piensas?'), so it doesn't need 'de'.
Me di cuenta que era tarde. (Queísmo)
Me di cuenta de que era tarde.
This is the opposite error, 'queísmo'. The phrase is 'darse cuenta DE algo' (to realize something), so the 'de' is mandatory.
Es probable de que llueva.
Es probable que llueva.
Impersonal expressions like 'es probable', 'es posible', or 'es importante' connect directly with 'que'.
📚 Related Grammar
Want to understand the grammar behind this pair? Explore these lessons for a deep dive:
✏️ Quick Practice
Quick Quiz: Que vs De Que (Dequeísmo)
Question 1 of 3
Which sentence is correct? 'Me alegro ___ hayas venido.'
🏷️ Tags
Frequently Asked Questions
What is 'dequeísmo' and 'queísmo'?
'Dequeísmo' is the common mistake of adding 'de' where it's not needed (e.g., 'pienso de que'). 'Queísmo' is the opposite mistake: omitting 'de' when it IS required (e.g., 'me di cuenta que'). Both are very common among native speakers, too!
Is there a list of verbs that use 'de que'?
Yes, memorizing a few key ones helps a lot! Common verbs and expressions that need 'de que' include: acordarse de que, alegrarse de que, estar seguro de que, darse cuenta de que, tener miedo de que, convencerse de que.
Why is this so confusing?
It's tricky because there's no perfect rule that applies to every verb, and it often depends on the specific meaning of the verb phrase. The 'ask a question' method is the best mental shortcut, but it takes practice to get a feel for which verbs need that 'de'.