Why he had to marry again

Question

Grammatical name
Grammatical function

Answer 1

you have to give the question.

Answer 2

Adverbial phase

Answer 3

An adverbial phrase is a group of words, which functions as an adverb in a sentence. It usually consists of an adverb and a modifier, which can be a preposition, noun, or adjective. Adverbial phrases can answer questions such as: When? Where? How? To what extent? Examples of adverbial phrases are "in the morning", "on the roof", "very slowly", and "to a great extent".