Ese documental sí que me hizo pensar.

In this sentence, sí que adds strong emphasis. It does not mean a simple yes.

So Ese documental sí que me hizo pensar means something like:

• That documentary really made me think.
• That documentary definitely made me think.
• That documentary sure made me think.

In Peninsular Spanish, sí que is a very common way to emphasize that something is true or had a strong effect.

The accent matters because sí and si are different words:

• sí = yes / an emphatic form used in expressions like sí que
• si = if

So here it must be sí que, not si que.

Not really in a literal way. In sí que, the que is part of an emphatic expression. You usually should learn sí que as a chunk.

It does not translate neatly word-for-word into English. Instead, the whole expression gives emphasis, like:

• really
• definitely
• sure did

So it is better to understand sí que as an emphatic structure, not as yes that.

Because hacer + infinitive often works like to make someone do something.

So:

• me hizo pensar = it made me think
• te hizo pensar = it made you think
• nos hizo pensar = it made us think

The pronoun me shows who was caused to do the thinking.

Compare:

• Ese documental hizo pensar = awkward/incomplete in most contexts, because we want to know who it made think
• Ese documental me hizo pensar = That documentary made me think

Because the meaning is made me think, not thought.

• pensó = he/she/it thought
• hizo pensar = made [someone] think

This is the pattern:

• hacer + infinitive

Examples:

• La película me hizo llorar = The film made me cry
• La noticia nos hizo reflexionar = The news made us reflect

So hizo pensar is a causative structure: something caused the action of thinking.

Because after hacer in this structure, Spanish uses an infinitive.

Pattern:

• hacer + infinitive = to make/ cause someone to do something

So:

• me hizo pensar
• me hizo reír
• me hizo cambiar de opinión

This is similar to English:

• made me think
• made me laugh
• made me change my mind

Hizo is the preterite of hacer, and it presents the action as a completed event: the documentary had that effect.

• hizo = made
• hacía = was making / used to make

In this sentence, the speaker is talking about a specific result or impact:

• That documentary really made me think.

If you said hacía, it would sound more ongoing, habitual, or backgrounded, which is less natural in this context.

Ese documental means that documentary.

Spanish demonstratives often work like this:

• este = this
• ese = that
• aquel = that over there / that more distant one

So ese points to something that is not right here with the speaker, but is identifiable in context.

In everyday speech, ese is very common for that.

Yes, if you mean this documentary instead of that documentary.

The grammar is the same. Only the demonstrative changes:

• Este documental sí que me hizo pensar = This documentary really made me think
• Ese documental sí que me hizo pensar = That documentary really made me think

The choice depends on what you are pointing to or referring to.

Yes, it is very common in Spain, especially in spoken language, as a natural way to add emphasis.

Learners often notice that Peninsular Spanish uses this kind of emphatic phrasing quite a lot. It sounds expressive and natural.

That said, speakers in other Spanish-speaking regions may also use it, but frequency and style can vary.

No. A literal translation sounds unnatural in English.

A better natural translation is:

• That documentary really made me think.
• That documentary definitely made me think.
• That documentary sure made me think.

This is a good example of where you should translate the effect of the Spanish, not each individual word.

Yes.

• Ese documental me hizo pensar = That documentary made me think
• Ese documental sí que me hizo pensar = That documentary really made me think

Without sí que, the sentence is neutral. With sí que, it is more emphatic.

So leaving it out changes the tone, not the basic meaning.

It sounds emphatic, personal, and a bit reflective.

The speaker is not just saying the documentary existed or was watched; they are saying it had a real mental impact.

Because of sí que, it can also suggest contrast, as if the speaker means:

• That documentary really did make me think
• maybe unlike something else
• or more than expected

So it can carry the feeling of genuine impact or surprise at how effective it was.

Yes, very often sí que can suggest an implicit contrast, even if nothing else is said aloud.

For example, it might hint at:

• other documentaries did not have the same effect
• the speaker did not expect this one to be so thought-provoking
• someone else doubted it would be meaningful

So the sentence can feel a bit like:

• That documentary really did make me think, though

The contrast is not required, but it is often part of the tone.

Yes, documental is masculine when it means documentary (film/programme):

• el documental
• ese documental

So the demonstrative must agree with it:

• ese documental, not esa documental

Yes. That is also correct:

• Ese documental realmente me hizo pensar

It means something very similar: That documentary really made me think.

But the tone is slightly different:

• sí que sounds more emphatic and conversational
• realmente sounds a bit more straightforward or neutral

In Spain, sí que is often the more expressive choice in everyday speech.