All the sentences that...（two words）

[Silverobama]

Hi.

I wrote the following short paragraph when someone asked me why I have so many notebooks with different sentences.

All the sentences that I've been writing down have been corrected by my language advisers on UE. I have copied these sentences not only for future reference, but also in appreciation of the time and effort they have given to helping me.

a) I think the that is optional here. Am I right?
b) Can I use "for future references" in this cotext? Or perhaps the "reference" in the phrase "for future reference" is uncountable?

 

[emsr2d2]

a) Yes.
b) No. It's uncountable here.

 

[teechar]

Note that "for future reference" is a set phrase. Do not change it.

for future reference

1. used when you tell someone something so that it will be known about and can…

dictionary.cambridge.org