De vs À vs Pour. Please help me!
When do I put de, á, pour in front of a verb?
This is an extremely hard question, and it's vast. In many cases, there are no rules. I'm just going to cover a few cases I know.
First, á doesn't exist. It's à.
à is used when you have the noun first. So noun + à + verb, such as j'ai quelque chose à faire.
à is used when speaking in general, such as c'est bon à savoir. "Good to know" is general. It's true in most cases.
De is used when speaking specific, such as c'est bon de savoir nager. Here it talks specifically about swimming.
De is used when you have the noun after. So de + verb + noun, such as C'est bon de gagner cet argent.
When you say something like, "thank you for..."
If "thank you for" + noun, it's safe to use "pour" but I believe in most cases "de" is acceptable.
If "thank you for" + verb, I believe you must use "de." "Pour" would be wrong.
Certain verbs take de or a after them in order to create a verbphrase - you just need to learn which ones take which. Pour is just what you use if you want to say "in order to".
There's no specific rule.
The general meaning is
de = of, from
à = to, at
pour = for, in order to
These words are still used differently in French than in English and there are many speical cases, so you'll still have to learn prepositions along with context.