Dave's ESL Cafe's Student Discussion Forums

[fw]

I came across the following sentence the other day. Which use, identifying or non-identifying, is the relative pronoun �which� below?

We are learning finger Braille which is a communication medium of deafblind people.

There is not a comma just before the �which,� but I guess the �which� is non-identifying in this context. Am I correct?

[CP]

There should be a comma there. Sometimes people leave out the comma by mistake, but you can hear it when the sentence is spoken aloud.
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You live a new life for every new language you speak. -Czech proverb

[fw]

Thank you, CP.

You wrote:
"There should be a comma there. Sometimes people leave out the comma by mistake, but you can hear it when the sentence is spoken aloud."

Then do I understand #2 below is not grammatically correct, since relative pronoun "that" does not have non-defying use?
2. We are learning finger Braille that is a communication medium of deafblind people.

And I think "finger Braille" is a proper noun. Am I correct?

[CP]

Braille is the system of reading and writing for blind people, developed by a doctor named Braille. I've never heard of it called finger Braille, just Braille.

It should have been written with a comma and which, not with that, because it is just an explanation of what Braille is.
_________________
You live a new life for every new language you speak. -Czech proverb