Prepositional Verbs / Phrasal Verbs.
Some intransitive verbs are made transitive by adding a preposition or prepositions.
Examples.
The bull ran at me (ran at = charged).
Look out for me at four o'clock (look out for = expect).
We hope for better times (hope for = desire).
Such verbs are sometimes called Prepositional / Phrasal Verbs.
Homework.
Find and list Prepositional/Phrasal Verbs as many verbs as you can; examine their meanings too.