Yes. Here is an example: That glove on the floor belongs to Dad.
I'm not trying to start a religious movement, here.
Month by month, my progress was noted right here on this blackboard.
Yes. The question states it nicely. Here is a full sentence: On top of the counter, you will find my keys.
Depending on the sentence there are multiple ways though you may start to sound like Yoda. Here's an example:You are very bad at gardening.Gardening is something you are bad at.
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.
Yes you can, here is an example: I was playing basket ball. Meanwhile, My friend was at a party without me. :)
The attitude of the first respondent to your question was a really inauspicious start to you quest for help here.
This here is a sentence with 'get' in it.
No, you cannot start a sentence with "no" unless you need to do so. No reason exists not to start a sentence with that word, as you can see. No one will care if you do start a sentence with it.
Here is your order confirmation for your recent purchase.
No. A sentence must contain a subject and a verb. "Here's why" does not have a subject or a verb.