Choose the most suitable option to replace the highlighted part of the sentence: We must prevent him to go there.

Correct — C. The verb is prevent, and it takes person + from + -ing: prevent someone from doing something.

The highlighted 'to go there' is a to-infinitive, a pattern prevent does not take.

Replace it with from + -ing: 'We must prevent him from going there.' → option (c).

Why the others are wrong

• (a)
  for going there — For going has the wrong preposition. Prevent pairs with from, like keep, stop and deter: keep someone from doing something.
• (b)
  from to go there — From to go puts a to-infinitive after a preposition. After from, English uses a noun or an -ing form: from going, not from to go.
• (d)
  not go there — Not go there gives prevent a bare infinitive, a pattern it does not take. It also doubles the negative: prevent already means stop, so not says it twice.

Some verbs fix the preposition that follows their object: a dependent preposition. Prevent is one, and its preposition is from.

After from comes a noun or an -ing form, so the verb becomes going. Keep, stop, deter, prohibit and discourage take the same person + from + -ing pattern.

Key facts

• Prevent takes person + from + -ing: prevent someone from doing something.
• After the preposition from, use an -ing form: from going, not from to go.
• Keep, stop, deter, prohibit and discourage also take person + from + -ing.

Common traps

• Keeping the to-infinitive and only adding from, as option (b) does.
• Choosing for because it sounds like purpose, when the preposition prevent takes is from.

No directly related past PYQ was found.