Sentence:
When I was a child, I wanted to travel across the whole world, even though it isn't possible when I think about it, but that sure was a good dream.
Eight parts of speech:
Noun – child, world, dream
Pronoun – I, it, that
Verb – was, wanted, is, think, was (to be / action verbs)
Adjective – whole, good
Adverb – even, though (in “even though” as a conjunctive adverb), sure (as in “sure was” — informal intensifier), when (adverb of time in “when I think”)
Preposition – across, about
Conjunction – when, even though, but, that (as a conjunction here)
Interjection - none in this sentence