Don’t Leave Prepositions Hanging

English is happy to leave the relationship word (preposition) stranded at the end of sentences:

  • Who are you talking to?
  • That’s the lady I work with.
  • The man I complained about.

Spanish puts the preposition between the acting parties — where the relationship actually is.

So Spanish doesn’t say (conceptually):
“the lady I work… with”
Spanish says:
“the lady with + whom I work”

What’s really happening

A preposition is the relationship word between two things:

Thing A ↔ (prep) ↔ Thing B

Spanish moves the preposition back to where it belongs ➡️ between the two parties.

The extra thing Spanish needs: who / what / which

In Spanish you can’t say the relationship word (with / about / to) and stop.

It needs pointer words (who / what / which one):

  • quien/quienes = who (people)
  • el que / la que / los que / las que = which one / the one
  • el cual / la cual / los cuales / las cuales = which one (more formal)

In real conversation it’s mostly:
✅ quien and el que / la que

Simple grammar formula (keep it simple)

Questions

[prep] + [who/what] + verb…

Statements

[thing] + [prep + who/what] + clause

Example 1 (question)

English: Who are you talking to?
Spanish: ¿Con quién hablas?

Formula parts:

  • con = relationship bridge (with)
  • quién = who (the person)
  • hablas = you talk

Build it:
✅ con + quién + hablas

Example 2 (statement)

English: That’s the lady I work with.
Spanish: Esa es la señora con la que trabajo.

Formula parts:

  • esa es la señora = the lady (Thing/person)
  • con = relationship bridge (with)
  • la que = which lady / the one
  • trabajo = I work

Build it:
✅ [Thing] + con + la que + trabajo
✅ Esa es la señora + con + la que + trabajo

Example 3 (statement)

English: The man I complained about is here.
Spanish: El hombre de quien me quejé está aquí.

Formula parts:

  • el hombre = the man (Thing/person)
  • de = relationship bridge (about)
  • quien = who (person)
  • me quejé = I complained
  • está aquí = is here

Build it:
✅ El hombre + de + quien + me quejé + está aquí

Example 4 (question)

English: What are you talking about?
Spanish: ¿De qué estás hablando?

Formula parts:

  • de = about
  • qué = what
  • estás hablando = you’re talking

Build it:
✅ de + qué + estás hablando

The recall trick?

Get old fashioned – think historical romance!

Because Spanish is basically forcing you into that old-fashioned English structure:

  • with whom = con quien / con la que
  • to which = a la que / al que
  • from where = de donde
  • in which = en lo que / en el que / en la que
  • about which = de lo que / de lo cual (more formal)

When English ends with a stranded preposition, flip into “Jane Austen mode” for 2 seconds.

Modern English: Who are you talking to?
Romance English: To whom are you talking?
Spanish: ¿Con quién estás hablando?

It’s not about talking posh — it’s just a memory shortcut to force the Spanish order.

Top 15 everyday “preposition + who/what” sentences

Below are 15 super-common everyday Spanish questions/sentences that use a preposition + quién/que (or a relative chunk like con el que). These are the ones that force Spanish to not strand the preposition like English does. The list is mostly questions, because that’s where this structure is most common + most noticeable in real speech.

  1. ¿Con quién estás?
    Who are you with?
  2. ¿Con quién vas? / ¿Con quién vas a ir?
    Who are you going with?
  3. ¿Con quién hablaste?
    Who did you talk to?
  4. ¿De qué estás hablando?
    What are you talking about?
  5. ¿De qué se trata?
    What’s it about?
  6. ¿En qué estás pensando?
    What are you thinking about?
  7. ¿En qué quedamos?
    So what did we agree on? / What are we doing then?
  8. ¿Para qué lo quieres?
    What do you want it for?
  9. ¿Para quién es?
    Who is it for?
  10. ¿Por qué?
    Why? (technically preposition + qué; insanely common)
  11. ¿Por quién votaste?
    Who did you vote for?
  12. ¿De quién es?
    Whose is it?
  13. ¿De quién estás hablando?
    Who are you talking about?
  14. ¿A quién se lo diste?
    Who did you give it to?
  15. ¿Con qué lo hiciste?
    What did you do it with? / What did you use to do it?

Bonus: 5 VERY common “relative clause” versions (the la que / el queones)

These are also real-life common:

  • La persona con la que trabajo…
    The person I work with…
  • El lugar al que fuimos…
    The place we went to…
  • La razón por la que no fui…
    The reason I didn’t go…
  • El día en que llegaste…
    The day you arrived…
  • La cosa de la que me quejé…
    The thing I complained about…

So: the 15 are absolutely among the most common “you’ll actually hear” items, yes — especially:

  • ¿con quién…?
  • ¿de qué…?
  • ¿en qué…?
  • ¿para qué…?
  • ¿a quién…?
  • ¿de quién…?