I can HEAR the birds every morning
We use our eyes to see and our ears to hear. Did you hear the good news? I can't hear you because the dog is barking so loudly.
"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").
The sentence "nobody can hear us" in past tense is "nobody could hear us".
"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 hardly hear you over the noise of the traffic outside.
He obstinately refused to hear my reasons.
Use a comma when you hear a pause in the sentence for a natural break, though short, between word groups within the sentence.
I cringe when I hear a squeaky hinge.
The correct sentence is, "Did you hear?"
He (or she) can not hear you.
I beckoned Lisa over to hear my secret about Dan.
He could hear echoes throughout the mountain range.
I could hear the girl weep and sob.
The speaker's melodious intonation was delightful to hear.
It is not pleasant to hear people swearing in the work place.
I hear a mouse squeaking. The door hinges are squeaking.
We use our eyes to see and our ears to hear. Did you hear the good news? I can't hear you because the dog is barking so loudly.