Why the word in the bracket include “in”?
Enclosed with this letter is a pre-addressed, stamped envelope (in which) to mail your application for membership to our club.

1) Why the word in the bracket include “in”?
2) I understood that just “which” is impossible due to “to mail”, but why “in” if “of, on, with and so on” other preposition is impossible?
3) And how to make a sentence if I use other preposition such as “of, on, with”.

Thanks

Question

Why the word in the bracket include “in”?
Enclosed with this letter is a pre-addressed, stamped envelope (in which) to mail your application for membership to our club.

1)	Why the word in the bracket include “in”?
2)	I understood that just “which” is impossible due to “to mail”, but why “in” if “of, on, with and so on” other preposition is impossible?
3)	And how to make a sentence if I use other preposition such as “of, on, with”.

Thanks

Answer

You put the application IN the envelope.  "In which" begins the relative clause which tells us more about the envelope.

I'm not sure exactly what you mean by the second question, and as for the third... well, use the normal preposition rules.

Answer

I also thought "with", I'm confusing why "in" not "with".
T.T

Answer

Think of the relationship between the letter and the envelope.

1. Which by itself means absolutely nothing inside a bracket in this sentence.
2. You put the application *in* the envelope. You can't use of or on. You don't put the application on the envelope, you don't put it of the envelope. With which could be used, but without using brackets.

Enclosed with this letter is a pre-addressed, stamped envelope with which to mail your application for membership to our club.

Answers · 3

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