Usage and Grammar

Q. The other day a colleague asked me if it’s permissible to use the expression “a momentum” in a sentence. I told him that momentum is a noncount noun and isn’t normally used with articles (a or the). In fact, after a cursory search, I could not find such a usage online. However, the sentence “we’ve built up such a momentum” sounds correct (or at least not wrong) to my ear. So I later emailed him to say that it’s correct to use momentum without an article, but it isn’t wrong to use an article. Am I being wishy-washy?

Q. What does The Chicago Manual of Style recommend for the usage of make vs. makes?

Q. Is it grammatically correct to say that “a nation or a society built a barrier or a wall”? Is it implied that we are talking about the citizens doing the building?

Q. The use of historic with landmarks, buildings, and districts is common. I’m confused by this when the entity is not a site where something historically important occurred, but is rather just old. Examples: historic Grand Canyon village, historic landmark status, National Register of Historic Places.

Q. I am having a disagreement over the placement of a word in a sentence: “The estimated cost is 1% higher than the original estimated cost.” I think the word original is acting as an adverb and therefore should be replaced with the word originally, whereas a colleague suggests that original ought to act as an adjective describing cost. What’s your opinion?

Q. I often have to edit sentences with dangling modifiers—for example, “As a valued supporter, I am pleased to invite you . . .” My go-to improvement is to add you into the sentence: “As you are a valued supporter, I am pleased to invite you . . .” That is, until today, I got back feedback from a higher-up that said it had to be changed, because “you can’t change the subject of the sentence from you to I.” Now I’m really confused! Is that a legitimate critique? Should I just rework the entire sentence? Thanks!

Q. Is it grammatically correct to start a sentence with the word because?

Q. Is this sentence correct, and if not, why? Because it is seriously injured, the dog may die.

Q. Dear Chicago, What is your stance on myriad versus a myriad of? Myriad thanks.

Q. I am working with a manuscript in which the faculties of reason and feeling are described as rationality and emotionality. Since emotionality is derived from emotional, it seems to me that it might convey an excessively emotional state rather than feeling. Kindly advise.