@Tony C posted:
how to make it easy for me to remember whether it is the noun or the verb that determines the choice of the preposition.
The only way I can think of is to form a sentence without the relative clause and see which preposition is required. The same preposition that is used in a simple sentence will be required for the relative clause:
- A late payment fee was imposed on the customers.
- These are the customers on whom a late payment fee was imposed.
- The details of the missing policy were provided to the insurance broker.
- There is one policy missing, the details of which were provided to the insurance broker.
- The Commissioner has to review and assess the trustee's tax position within a certain period.
- The Commissioner has a certain period within which to review and assess the trustee's tax position.
- I paid a fortune for a bag.
- I bought an expensive bag for which I paid a fortune.
- I have to submit the documents by a set deadline.
- Please tell me the deadline by which I have to submit the documents.