Verbs followed by preposition + gerund

These verbs can be followed by for + gerund:
apologize, blame, arrest, praise, forgive, punish, tell off, thank
Have you apologized to Sam for breaking her pen?

These verbs can be followed by from + gerund:
stop, prevent, discourage
His parents prevented him from leaving the town.

Congratulate and insist are followed by on + gerund.
She insisted on paying for the drink.

Warn can be followed by against + gerund.
We tried to warn her against driving in the snow.
Warn can also be used with of or about + noun.
Posters have been put up warning people of the dangers of smoking.