Yes, and if anyone argues you're ending a sentence with a preposition, they're wrong. In this case, 'inside' functions as an adverb answering the question "where is the phone ringing?"
The possessive pronoun 'yours' is correctly taking the place of the noun briefcase as the subject of the sentence. The object of the linking verb 'is' is the complete noun clause 'the briefcase with the phone ringing inside'.
It is almost correct: it simply needs an article before the word phone, to make the sentence "Yours is the briefcase with the phone ringing inside." This sentence could be the answer to the question, "Which briefcase is mine?""The briefcase with the phone ringing inside is yours" is a more common construction, however.
Both are correct, in is just an abbreviation for inside, so the sentences are the same.
No, the grammar in that sentence is not correct. It should be: "Once we get inside, David said, 'You can take your boots off.'"
inside
Yes, "I am in your home" is grammatically correct. It is a simple sentence stating that the speaker is currently inside the home of the person they are talking to.
Yes, it has a noun, verb and all the other sentence characteristics.
The correct sentence is "I put the newspaper on your chair." This indicates that you placed the newspaper on top of the chair, rather than inside it.
A sentence for inside is: It is too cold out there, let's play inside.
Whomever is correct. Would you say "You talk to she..." or "You talk to her". "Whoever" matches the subject of a sentence. Whomever matches the predicate (ending) of a sentence. Read it with the changes that were made. Which sounds better. - The answer above is above is not right. The question is a thorny one, because while "whomever" is correct as the object of the preposition "to," it CANNOT be be the subject of the finite verb "was." If we did not have the -ever part, we would say "Talk to him or her who is inside," with the object and subject pronouns properly sorted out. Since "whomever was inside " is utterly barbarous ( we don't say "him was inside" for example) I would say "Talk to whomever you like," but "Talk to whoever was inside."
The proper English is "I am angry with you" or "I am angry at you.""In you" means that something is inside of you, not that the person is angry at them.
Maribeth's wore sunglasses even inside; her eyes were highly sensitive to light.
Yes, the padding inside will keep your laptop and other equipment safe.