GERUND AFTER PREPOSITION
If we want to use a verb after a preposition, it must be a gerund. It is impossible to use an infinitive after a preposition. So for example, we say:
- I will call you after arriving at the office.
- Please have a drink before leaving.
- I am looking forward to meeting you.
- Do you object to working late?
- Tara always dreams about going on holiday.
Notice that you could replace all the above gerunds with “real” nouns:
- I will call you after my arrival at the office.
- Please have a drink before your departure.
- I am looking forward to our lunch.
- Do you object to this job?
- Tara always dreams about holidays.