I like this course because it teaches me about clauses, punctuation and placement, time and place, cause and contrast, condition, and the introduction of adverb clauses. The keywords for adverb clauses are even if, if, unless, in case, where, wherever, everywhere, before, because now that since, although, whereas, while, then, etc. I also learned how to avoid mistakes in adverb clauses with six pieces of advice, either adding an unnecessary or missing the commas; if the adverb clause comes at the end, there is no comma. If it comes first, use a comma. Look out for the wrong conjunction in sentences, having incomplete clauses without the subject and verb, and study the fragment for either the subject or predicate is not in sentences; having extra conjunction doesn't start an independent clause with coordinating conjunction words such as for, and, nor, but, or, yet, so or FANBOYS, and don't use subordinate conjunctions as a transition in your writing. Adverb clauses are an essential part of writing, and they can add deep and complexity to your sentences.