There are about 4, but I think the most important are~
To persuade and to inform.
Answer:
It means something that is nice to do but it is sad. Something that’s might be sweet sorrow would be doing something you love like hanging out with all of your friends from childhood for the last time. That things is so fun and awesome, but it is also super sad because you know it’ll be the last time. In the same way something can be both sweet and sad.
Explanation:
A dependent clause can act as an adjective, adverb, or noun.
