Hello Jose,
I stumbled onto your forum when I was looking for information on adverbial clauses. I am a native English speaker and I love grammar. I have found your site to be a treasure trove. I have read your explanation on the types of adverbial clauses and how detailed your explanation was. However, It seems that you missed a few.
What do you think about adverbial clause of reason, adverbial clause of contrast, adverbial clause of means, adverbial clause of distance, adverbial clause of frequency, adverbial clause of proportion, adverbial clause of preference, etc.?
What are the subcategories of each adverbial clauses?
Could you provide a comprehensive or near complete list of conjunctions for each semantic classes?
Since noun clauses, adverbial clauses, and relative clauses can look similar in structure, could you explain the differences between them in regard to structure or construction?
Many subordinating conjunctions, relative adverbs and/or relative pronouns can belong to multiple or function in different semantic classes of adverbial clauses, could you provide a list of those that can have many semantic roles in adverbial clauses?
I hope that I have not bombarded you with my questions. You seem to be right who would explain grammar thoroughly, which is why I am asking all these questions. Also, your explanation will benefit other learners of the English language or those who love the English language like I do. By the way, feel free to add many more that was not mentioned in my message.