I leave you some subordinate sentences:
- Me gusta el chocolate que me regalaste.
- No sé si iré al cine mañana.
- Cuando llegues a casa, llama a tu madre.

Let's remember that subordinate sentences are sentences that depend structurally on the nucleus of another sentence.
This type of sentences can be classified according to their syntactic function:
- Sustantivas ↝ If the function it performs is of a noun
- Adjetivas ↝ If the function it performs is of an adjective
- Adverbiales ↝ If the function it performs is of an adverb