The correct usage depends on whether you need the adjective "serious" or the adverb "seriously". "More" is an adverb that modifies the adjective or adverb.
Correct use of "more serious": Brian was a more serious student than his younger brother.
Correct use of "more seriously": He took the stage and spoke to the crowd more seriously than he had at any time during the past three months.
Seriously.
Seriously is an adverb. Serious is an adjective.
"More swiftly" is proper usage. "Swifter" is not.
In strict English grammar, the correct thing to say is "it is I." It is me is just more common usage.
more serious, most serious
The comparative form of the adjective 'formal' is more formal.The superlative form is 'most formal'.
more serious and most serious
Seriously is an adverb. Serious is an adjective.
yes
Both are correct; however, the more concise and therefore more elegant usage is "by evening."
"More swiftly" is proper usage. "Swifter" is not.
I believe the correct term is, more serious
No, "seriousest" is not a word in standard English. The correct comparative form of "serious" is "more serious."
We (includes yourself) They (2 or more others)
He was. That is why there was world war two. It doesn't get any more serious than that.
It is a correct usage, but descriptively vague. Adjectives such as forested or tree-lined would be more specific.
Both "please find attached for your use" and "please find attached for your usage" are correct, but "please find attached for your use" is more commonly used and considered more concise.
More wicked Most wicked