2. We sometimes use non-defining adjective clauses with
which to make a comment about an entire previous
clause or idea.
In conversation, we usually use these adjective clauses
to express an evaluation or a feeling.
She said the games are completely sold out, which is ridiculous.
Amanda says we’ll save more money if we
buy early, which is a good point.
3. In conversation, we use non-defining adjective clauses
with which to express likelihood.
He’s planning on getting into Harvard, which is
possible, but not likely.
We also use them to give a reason:
I run 20 miles a week, which is why I need to
wear good shoes.
4. We also use them to interpret information.
A: It says that the movie starts at 8.
B: Which means it will start at 8:15, after
the previews.
We can attach these clauses to our own sentences, or
use them to respond to another speaker.
A: No one ever goes to that place anymore.
B: Which is odd, when it was so popular a few
months ago.