Either a comma or a semi colon can be used, depending on the rest of the sentence.
Yes, usually.
Yes. Therefore is usually used at the start of a sentence, to indicate a concluding idea or thought. The comma following it is used as a pause, separating the connecting word from the idea or thought. Strangely enough, a comma is not used in my sentence above because " Therefore " is used as the subject of the verb is, rather than used as a connecting word to a previous idea or statement.
comma in front of therefore; semi colon in back of therefore
yes
I do not use a comma before and after that word, therefore you will not see it in any sentence I have written.
Say your sentence aloud. If you find you pause before the word 'therefore', you will probably want to insert a comma. If you do not pause, no comma is required. Use a comma when the sense requires it, not because you have a specific word in your sentence.
There is not a comma after Inc but there is a period then you continue the sentence. It should look like this- Inc.
No, the comma does not always go after "nowadays" at the beginning of a sentence. Whether a comma is needed depends on the context and the rest of the sentence. If "nowadays" is being used to introduce a contrast or emphasize a point, a comma may be used. However, if "nowadays" is used as part of the subject or the main idea of the sentence, a comma may not be necessary.
No comma is required in the sentence 'Everybody eats ice cream.' Say it aloud: there is no pause, therefore no comma.
If a sentence needs a pause in the middle and a comma is not strong enough, then a semicolon can be used.
No, it's not improper.