While errors with the subject/verb chord in spoken English can apparently slip without repetition, they can be a big problem when writing. Please don`t write like my two-year-old is talking! It only takes a few more seconds to make sure your sentence “works” from a grammatical point of view. If you have some fun examples of problems agreeing, or if you have a real toughie that needs the attention of a professional, please comment below! Hello, Renee, In the sentence in question: The patchwork (federal and regional regulations) companies have great uncertainty as to how to satisfy, note that the preposition phrase “federal and state regulations” is an “adjective phrase” that changes the real theme of the sentence that is “patchwork”. “Patchwork” is singular, and the verb of the sentence must therefore correspond to: “The patchwork… a “instead of the fake” Patchwork… “The program verb does not refer to this word, but to demonstration – it is the act of protesting, it is not the programs that have provided the support mentioned here that has the correct form of verb: “The demonstration of effective continuous monitoring programs has also helped leading institutions meet increased regulatory expectations.” In #4, I don`t see how patchwork is a subject. The theme is federal and regional regulations. (By way of a marginal remark, the “save” makes a transitive verb because it acts on an object.) Most languages have a usual word order like this: a) subject, verb, direct object. b) Subject, direct object, verb. c) The verb, the subject, the direct object. Other things like indirect objects and adverbs vary from language to language.
The usual order of the words is quite mathematical and logical. When it comes to adjectives and adverbs, many people don`t seem to know that, in English: a) adjectives, including articles, usually continue their names, but the attached prepositional phrases usually follow them. (A coral truck from the bottom of the ocean.) b) Adverbs, including adverbiale preposition phrases, usually follow their verbs. Exceptions are found where the adverb is highlighted. That`s how people “scream” who advance their adverbs all the time, all the time. You might as well write anything in UPPER CASE! In sentence A, “One” is the object of the sentence, and one of them is singular. There is no way to go. Some people find ways to argue that “none” is not singular, but “none is” acceptable, but I absolutely cannot see it. If “one” is singular, “zero” is also singular.
In sentence B, we do arithmetic in the form of words, and “a third” is multiplication.