Anybody does not sleep well during the night.

(Is this sentence grammatical?)

Thank you. That is answered already. What about the following ones?

1. Anyone does not sleep well during the night.

2. Any one do not sleep well during the night.

3. Any people do not sleep well during the night.

4. Anything is not useful in this room.

5. Any boy has not brought pencils.

6. Any boys have not brought pens.

(Are they grammatical? What expressions can we use?)

No, none are correct. Here are the ways these ideas should be phrased:

1, 2, 3 = No one in that house sleeps well during the night.
(You can put other qualifiers in place of the underlined words, but something needs to be there. It will not make sense to say, "No one sleeps well during the night.")

4. Nothing in this room is useful.

5. None of the boys have brought pencils.

6. None of the boys have brought pens.

No, the sentence "Anybody does not sleep well during the night" is not grammatically correct. The correct sentence would be "Nobody sleeps well during the night." Let me explain why:

To negate a verb in English, we usually use the word "not" directly after the auxiliary verb, in this case, "does." However, in the sentence given, "does" is not needed because we can use the indefinite pronoun "anybody" as the subject on its own.

So, to correct the sentence and make it grammatically correct, we need to use "nobody" instead of "anybody" and place the negative adverb "not" after the verb "sleeps." The corrected sentence is "Nobody sleeps well during the night."