no, you shouldn't because it is a connective. Connective's are used to join to sentences to form one. You might be able to pull it off if the sentence is a piece of dialogue/internal monologue, written after a sentence that mentions what a character was thinking about.
Yes you can start a sentence with but.
In conversation you can use but to show that what you have to say contrasts with or disagrees with what some one else has said.
"You should buy this ring for your wife."
"But I'm not married!"
`Somebody wants you on the telephone'.
`But no one knows I'm here!'
Always start the beginning of a sentence with a capital letter.
No, why should it be? Well if it's at the start of a sentence, but really, how many sentences start with the word example?
Since 'felon' is a common noun, it is only capitalized if it is at the start of a sentence.
No, "diabetes" is not capitalized unless it is the first word in a sentence or part of a proper noun.
Why not? Regardless of the danger, I plunged ahead.
no
Always start the beginning of a sentence with a capital letter.
Yes. 'Thus' is another word for 'therefore'. Thus the sentence you start of with 'thus' should be an explanatory sentence.
No, you should not. You should only capitalize a word when it is at the start of a sentence or when it is a proper noun.
No, why should it be? Well if it's at the start of a sentence, but really, how many sentences start with the word example?
However. On the other hand.
Since 'felon' is a common noun, it is only capitalized if it is at the start of a sentence.
Only if it's the first word in a sentence.
No, "diabetes" is not capitalized unless it is the first word in a sentence or part of a proper noun.
You start a sentence with whatever word you need to start it with. A sentence can start with "A" if it needs to. A sentence just needs to make sense.
can you start a sentence using the word phishing?
And is a coordinating conjunction; therefore it should never begin a sentence. Ironically, though, the preceding sentence is correct because and is used as a word, not as a conjunction.