The sentence "nobody can hear us" in past tense is "nobody could hear us".
Nobody could hear us.
"Could you hear the noise of the waterfall" is a complete sentence, because it contains an active form of a verb ("could hear") and a subject ("you").
Did you hear what Joanne said? You can change the name to whatever.
Young ears ought not hear what I have to say.
"Sit down and hear" is a sentence fragment, as it lacks a subject and a main verb. To make it a complete sentence, you could add a subject and a verb, such as "Please sit down and hear the presentation."
I can hear the music playing from my neighbor's house.
"Could you hear the noise of the waterfall" is a complete sentence, because it contains an active form of a verb ("could hear") and a subject ("you").
Did you hear what Joanne said? You can change the name to whatever.
"Nobody among us is..." is correct. "Nobody among us are..." is wrong. Although "us" is plural, the actual subject of your sentence is the word "nobody," which is always treated as singular. You will hear many people say "nobody among us are...," but it is always incorrect.
The correct sentence is, "Did you hear?"
He (or she) can not hear you.
No because sound is something you hear and if nobody hears it, there is no sound.
It can be, depending on the way it's used.
Nobody knows
It is what you will hear in informal speech, but is not correct for formal writing. Try: "That is the girl.", "That is the woman.", "That is my sister.", "That is my wife.", etc. The grammatically correct form of the sentence 'That is her' is 'That is she.'
I can hear the music playing from my neighbor's house.
No, when you sing your also hearing the vibrations from your throat which nobody else can hear
Young ears ought not hear what I have to say.