What do you mean by a line? If you mean a sentence, then yes, just like this. If you mean a natural line break that results from a sentence reaching the end of the paper, then yes, just like that. If you mean an artificial line break
like this that does not come from the sentence reaching the end of the paper, no, you can't do that.
You do not have to underline it. A new paragraph should start on a new line and the first line may be indented, but this is optional.
No, each paragraph should be about the same subject. If you start a new subject, you need to start a new paragraph also.
You definitely do if you are starting a new paragraph whilst handwriting work, but if you are doing work on the computer, you don't have to- I think you have to leave a line to show a paragraph if you are typing it. It is the same with speech- you have an indent for each new speaker, but stay on the same line if the same person is talking. (Leave a line if you type it) Hope that helps!
You should not start a new paragraph when continuing the same thought or idea. Keep related information together within the same paragraph to maintain coherence and clarity in your writing.
Enter key is pressed when the user wants to start with a new line or a new paragraph on a word processor.
Usually not--each new speaker should start a new paragraph.
In dialogue, each separate speaker starts a new paragraph on a new line. When a speaker enters again later, it should still be a new paragraph on a new line.
Each speaker in dialogue should begin a new paragraph on it's own line. The next speaker would be on its separate line in a paragraph.
Sort of... when a new person begins speaking, you should start a new line, but not a new paragraph. Hope that helped :D
An indented paragraph is when the start of the first line is set further in. The rest of the paragraph starts normally. Another example is an empty space at the beginning of a line to indicate the beginning of a new paragraph.
No. When you change speakers, you need to start a new paragraph. Otherwise, it's too hard to figure out who is speaking.
You start a new paragraph in descriptive writing when you start a new topic