The tea is too hot.
I was at home all day, but I am feeling very tired.
In the first sentence, the is an article, is is the helping verb, tea is noun, too is adverb and tea hot adjective.
In the second sentence, I (pronoun), was, am (Helping verb), at (preposition), home and day (nouns), very (adverb), tired (adjective), feeling (verb)