Basic Rule
In English, when a verb follows a preposition, we must use the gerund form (-ing). This is a fixed rule that applies to all prepositions like 'in', 'on', 'at', 'about', 'before', 'after', etc.
Structure Formation
preposition + verb(-ing)
Example: She's interested in learning Spanish.
The structure remains consistent regardless of the preposition used.
Example: She's interested in learning Spanish.
The structure remains consistent regardless of the preposition used.
Examples
I'm thinking about moving to London.After the preposition 'about', we use the gerund 'moving'
They're excited about starting their new job.The preposition 'about' is followed by the gerund 'starting'
She's good at playing the piano.After the preposition 'at', we use the gerund 'playing'
Thanks for helping me with my homework.The preposition 'for' requires the gerund 'helping'
Common Mistakes to Avoid
❌ Incorrect: I'm interested in to learn French.
✅ Correct: I'm interested in learning French.
Explanation: Never use infinitive after prepositions; always use gerund
❌ Incorrect: She's afraid of fly in planes.
✅ Correct: She's afraid of flying in planes.
Explanation: The base form of the verb can't follow prepositions
❌ Incorrect: Before to go to bed, I read a book.
✅ Correct: Before going to bed, I read a book.
Explanation: Preposition 'before' must be followed by gerund, not infinitive
Tips for Success
- Remember: preposition + -ing form ALWAYS
- Think of prepositions as gerund-loving words
- If you see a preposition, automatically add -ing to the following verb
- Create mental pairs of common preposition + gerund combinations you use often
Learning Path Notes
Key Concepts in This Series:
- Builds on previous understanding of gerunds
- Connects to verb patterns with prepositions
- Prepares for more complex gerund structures