Your sentence
Me+alegro+de+que+estés+aquí.
Words in this sentence
de
of; 's; used after the thing owned and before the owner; from (with the source or provenance of or at); of (expressing composition, substance); about (concerning; with regard to); of; from (indicating cause); of (indicates a quality or characteristic); from (with the origin, starting point or initial reference of or at); of (indicates the subject or cause of the adjective); from (with the separation, exclusion or differentiation of); than (in certain phrases); …
Preposition
que
that; than; indicates reason; because, for; used to form sentences with an optative meaning; may; indicates emphasis or repetitive answer
Conjunction
estar
to be (have a temporary or permanent location in space); to be present; to be (denotes a copula, in a transient fashion); to be (auxiliary verb for the progressive/continuous aspect, preceding the gerund of the verb); to be in a state (in a passive voice sense); to be, stay (denotes a copula, in a transient fashion); to be (still); to be in a long-term state (in specific idioms)
Verb