No, it's not. It has no subject or verb. Therefore, it is only a phrase.
No, starting a sentence with "then" does not make it a complete sentence on its own. It is typically used as a transition word indicating sequence or consequence and should be followed by an independent clause to form a complete sentence.
No it does not. An example of a complete subject NOT in the beginning of a sentence could be: "In the morning, the black dog begged for his breakfast." Another: In the corner of the cage looking hungry ready to pounce crouched the wild tiger.
Yes, "Is you won the trophy" is a fragment sentence because it is missing a subject and does not express a complete thought. It could be corrected by adding the subject "You" at the beginning to make it a complete sentence, such as "You won the trophy."
because other wise it would look dumb
To fix the sentence fragment "Hit the stone hard," you can add a subject at the beginning, such as "He hit the stone hard." This creates a complete sentence with a subject, verb, and object.
...a complete sentence on its own. If the direct quotation is integrated into the sentence and not a standalone sentence, then the first letter does not need to be capitalized.
A sentence beginning with laugh is an order.
Capitalize the first letter of a quotation when the quotation is a complete sentence or directly follows a colon. If the quotation is in the middle of a sentence and does not stand alone as a complete thought, the first letter is not capitalized.
whole crop harvested in one week
Yes, but only if they're continuing off of another sentence. And generally, it doesn't form a complete sentence unless the preceding one is also a two-part sentence. There's an answer and an example in one. Not in traditional formal grammar.
The subject is typically at the beginning of a sentence, performing the action or being described in the sentence.
"The armadillo is a poor swimmer." is a complete sentence