The total subject is "the device"; the simple subject is "device".
The subject in the sentence "here is the device" is "device."
No, "here's why" is typically the beginning of a sentence or phrase that is used to introduce a reason or explanation for something. It is not a complete sentence on its own.
I am not a grammar expert so this is a personal opinion. I think it is a sentence. Consider "Here's Tom" or "Here's the bus". They are sentences. Tom is here; the bus is here. Here's why means 'why is here', or 'this [here] is the reason [why]. It is not a particularly good sentence mind you, but it is a sentence.
no. Their is a possessive pronoun, by itself it cannot be the subject of a sentence. We, they, I, he,she, it can be subjects but not their. Their can be part of the subject if it has a noun with it: Their dog chased my cat; here "their dog" is the subject.
The subject in the sentence is "you."
No, the sentence "Come here once" does not violate any rules of grammar. It is a complete sentence with a subject ("you" understood) and a verb ("come") that expresses a complete thought.
you
No, "here's why" is typically the beginning of a sentence or phrase that is used to introduce a reason or explanation for something. It is not a complete sentence on its own.
Yes
mail.
the subject is problem and the verb is answer
A sentence must have a subject and predicate to be a sentence. The exception is when the subject is inferred. "going to the sale" is not a sentence. It needs a subject. We are going to the sale. is a sentence. Speaking to another person, "Stay here" is a sentence. The subject "you" is inferred.
I am not a grammar expert so this is a personal opinion. I think it is a sentence. Consider "Here's Tom" or "Here's the bus". They are sentences. Tom is here; the bus is here. Here's why means 'why is here', or 'this [here] is the reason [why]. It is not a particularly good sentence mind you, but it is a sentence.
The subject of the sentence is "the winning Float."
Subject: the ginger bread manPredicate: Here goes
Phone
no. Their is a possessive pronoun, by itself it cannot be the subject of a sentence. We, they, I, he,she, it can be subjects but not their. Their can be part of the subject if it has a noun with it: Their dog chased my cat; here "their dog" is the subject.
D Here is. This is a fragment sentence because there is no subject in the clause.