As you might guess from their name, adverbial pronouns are caught between two worlds: they are pronouns in the sense that they replace nouns, and at the same time they are adverbs representing a place, a quantity, or the object of a proposition. French has two adverbial pronouns: en and y.
Two or more words often join to create a conjunctive phrase, which just means a series of words that acts like a conjunction. Most conjunctive phrases end in que and all are subordinating conjunctions.
Determiners are a category of grammatical terms that includes articles, numbers, and non-qualifying adjectives. Unlike qualifying adjectives, determiners serve two functions: they introduce and modify nouns at the same time.
Devoir and falloir are fairly synonymous, but these two French verbs are not interchangeable. Their meanings are slightly different, and they each have additional meanings, depending on how they're used.
Sometimes one pronoun just isn't enough. A sentence might need both a direct and indirect object, or a reflexive pronoun as well as an adverbial. When this happens, word order becomes an issue: how do you know which pronoun to place first? It's actually pretty easy, once you learn the rules.
The causative is a grammatical construction with a lazy subject who, rather than performing some action himself, is making someone or something else do it: to make something happen, to have something done.