Yes, the sentence, 'I am palpitating,' is gramatically correct. For example: A doctor might say, 'I am palpitating. I'll begin with your abdomen; please tell me if you feel discomfort.' You might say, 'I am palpitating my stomach, and I think I feel distension,' If you were speaking, though, of feelings of palpitation in yourself, you'd say, 'My heart is palpitating,' Speaking of another person or creature, you might say, 'I can't smell anything, but my dog's nostrils are palpitating.' or, 'He looks as though his heart's palpitating.'
To beat with excessive rapidity
"How are you" is a correct sentence.
Yes, this sentence is correct.
Yes, the sentence "your retina is healthy" is correct.
no it is not a correct sentence.
That sentence is grammatically correct.
no_____If the sentence is You do do that (meaning You are in the habit of doing that) the grammar is perfectly correct and the sentence 'does have correct grammar'.
"You and him" is correct in a sentence such as, "I sent the tickets to you and him," versus a sentence such as, "You and he should send the tickets to me."
No - the sentence 'Had never been experience' is not a correct sentence.
Yes, the sentence is correct grammatically. The sentence is The frogs were in the water.
Yes, the sentence is correct.