The construction with "as" serves the function of an adverbial determination of manner, then it is written without a comma. He soon stopped enjoying reading, just as he had enjoyed watching movies. (× He would like to be able to write like Hemingway.) connection with "as well as" Conjunctions such as "as well as" in a sentence usually connect multiple clauses; a comma is only used before them. eVisions' specialized teams cover SEO, PPC, content marketing, as well as social media. information connected by "and" If other clauses are added to the sentence using the combination of the expressions "a to" that provide additional information, a comma is written before "a to" (if the construction with "a to" is inserted into the sentence, it is separated by commas on both sides).
Attention! It is necessary to distinguish cases when "a" connects sentences in a coordinating conjunction and "to" is a pronoun that refers to the content or clause of the previous sentence. In this case, a comma is not written before "a to". They started working with a marketing agency, namely eVisions. (× They started working with eVisions and this brought the Cameroon Mobile Database higher conversions and profits.) connection with "to" A comma is used before a construction with "až" if it is added as an addition or if "až" has a gradation meaning. If you use the expression "až" with the meaning "except", you can write it with or without a comma. I haven't written an article in a long time, until August 2021. She looked helpless, almost desperate, as she wrote. Everyone drank except for pregnant Tereza. Source: Unsplash.
Cannot be made without commas if it includes: coordinating conjunctions of sentences with the conjunctions a, i, ani, or, or A comma is used before the conjunctions "a, i, ani, nebo, či" when they connect main or subordinate clauses in a relationship other than simply a coordinating conjunction. A comma is also used before the conjunction "a" when it comes before a subordinate clause in a complex sentence or when it connects a main clause (or part of it) that follows a subordinate clause. She tried, but she failed. (contrastive conjunction; the conjunction "and" can be replaced by the conjunction "but" or "(and)however".