Choose the most suitable option to replace the highlighted part of the sentence:
You must prevent your brother to do such things.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. from doing such things.
Introduction
The sentence requires correcting the highlighted phrase.
Error is related to / concept
The error concerns the verb prevent and the preposition that follows it.
What is wrong
“Prevent your brother to do such things” is grammatically incorrect because prevent never takes “to + verb”.
Grammatical concept
The correct structure is:
prevent + object + from + gerund (-ing form).
Incorrectness of the concept in context
Using “to do” violates the standard verb–preposition pattern associated with prevent.
How to correct + extra concept (if any)
We must use from after prevent and follow it with an -ing verb.
Correct phrase / correction
prevent your brother from doing such things
Final sentence
You must prevent your brother from doing such things.