por for cause and exchange

One of 124 rules YabLab tracks in Spanish writing.

A typical slip

Gracias para todo tu apoyo.

Gracias por todo tu apoyo.

The rule

por for cause and exchange

Many words select the structure that may follow them: a particular preposition, case, infinitive, participle or clause. This relationship is part of the word’s grammar.

Find the key word
Locate the word that selects the pattern A verb, noun, adjective or preposition usually determines the complement.
Learn the frame
Store words with their construction Learn depend on, capable of doing and wait for as complete units.
Check meaning
Similar structures are not interchangeable Changing a preposition or case can change the relation or make the phrase ungrammatical.

What YabLab does with this mistake

  1. Catches it right as you write — comments, email, docs.
  2. Explains the why in your language, not just the fix.
  3. Helps you practice it until it is gone for good.