Certain adjectives, nouns and verbs take a preposition after the word in the sentence. Some, in fact take more than one and the meaning can be similar or very different. Unfortunately, there are no rules for these prepositions and the best way to learn them is by noticing them and trying to use them as frequently as possible. But not everything is bad news and a dictionary can help you with this tedious part of the English language.
Here’s an activity for some practice but there are as hundreds of other formations so, remember to look for these samples when reading.
Hello, here’s a grammar activity on infinitives without ‘to’, to infinitives and -ing forms.