i met a famous celebrity.
Using the word "then" at the beginning of a sentence is not incorrect. However, it does not make a sentence complete. A complete sentence must have, at a minimum, a subject and a verb. "Then" is neither of those.
My angst led me to complete this sentence.
No, "How quickly you learn" is a sentence fragment. It lacks a subject and verb to make it a complete sentence.
sentence is a complete thought with a noun and verb. Fragment is just part of a sentence and does not make a complete thought.
Make each fragment into a complete sentence.
If you are asking whether the words "Is this a question" make a complete sentence, yes-- but not a declarative sentence. They make a question, and they need a question mark at the end. A declarative sentence is just a statement of fact: "Yes, this is a complete sentence." But a question is where you ask someone about something: "Do you have any questions to ask me?"
although
A sentence is a complete thought with a noun and verb.A sentence fragment is just part of a sentence and does not make a complete thought.The above are sentences.Here are some fragments that make no sense:the sentence fragment?what is?your answer in a complete sentencethe boy who lived down the streetbecause he had to go home
"Hurry" on its own is not a complete sentence. It is a verb that needs a subject to make it a complete sentence, such as "Hurry up!" where "you" is implied as the subject.
For a sentence to be complete, it must have a subject and a verb. Giving the incomplete sentence the missing parts will make it complete.For example:"Went to the park" can be made complete by adding a subject to make it "We went to the park""It blue" can be made complete by adding a verb to make it "It is blue""The moon tonight" can be made complete by adding a subject and a verb to make it "I looked at the moon tonight"
A subject
An incomplete grammatical construction is a series of words, phrases, or clauses that do not constitute a complete sentence. A complete sentence has a subject and a verb, and does not contain an introductory adverb, pronoun, or other word that makes it depend on a complete sentence to make sense. Some examples: Complete sentence: John hit me. Incomplete sentence: when John hit me...[This depends on a complete sentence to make sense.] Complete sentence: When John hit me, I hit him back. Complete sentence: Who is good? [The fact that it's a question makes it complete.] Incomplete sentence: who is good [The fact that it's not a question makes it depend on a complete sentence to make sense.] Complete sentence: A boy who is good will not go to the principle's office every so often. Other incomplete sentences: at at the bank feeling confused at the bank who is feeling confused at the bank because I was feeling confused at the bank Complete sentence: I left because I was feeling confused at the bank.