Teachers, I'd like to ask you a few things about the following sentences, please.
I. Please tell me if the parts that I've underlined in the following sentences are subordinate clauses functioning as an adverb.
1. Tom can't go out today, since he's sick.
2. She saw a very interesting movie when she was in U.S.A.
II. Is the comma correct before the subordinate clause, as shown in 1?
Thank you.
[1] Tom can't go out today, since he's sick. A. Preliminary point: don't call them adverbs.
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[1] Tom can't go out today, since he's sick.
[2] She saw a very interesting movie when she was in U.S.A.
Preliminary point: don't call them adverbs. Adverb is a word class (part of speech): happily pl