I am trying to learn how to construct sentences by using the world pile and laundry.

[scott833]

1) I could not find my sock in the pile of laundry i did yesterday.
2) Please add this shirt into that pile of laundry which i will be doing later.
3) I have lost the pair to this sock.
4) I have lost the other sock for this sock

 

[JMurray]

scott.

1) I could not find my sock in the pile of laundry I did yesterday.
2) Please add this shirt to that pile of laundry which I will be doing later.
3) I have lost the pair to this sock. Sounds OK to me.
4) I have lost the other sock for this sock. A bit awkward but the sense is there.

If you are holding up the sock, then perhaps:
"I've lost the sock that goes with this (one)".
"I've lost the sock that matches this (one)".


not a teacher

 

[SoothingDave]

Both socks make up a pair." If one is missing, it is not the "pair." It would be the "mate" or the "match" or "matching sock."

 

[JMurray]

Both socks make up a pair." If one is missing, it is not the "pair."

The missing item from a pair is sometimes described in this way.
The director of Sotheby's discussing items for a charity auction: "These are the plume of feathers, which is his symbol. And there's a pair to this which is now owned by Prince Charles. He took the pair to this."