Of course you can. I am only 12 and I know that. That sentence I have just wrote means you can start a sentence with the letter I.
No it won't, unless it is at the start of a sentence.
The first word of a sentence must start with a capital letter. There are millions of ways to start a sentence!
A capital letter.
A capital letter
When most of the words in a sentence start with the same letter, it is called alliteration.
potatoes are delicious
Only if its at the start of a sentence:)
The words that should start with a capital letter are places, names, important words in a title, and the letter at the start of a sentence.
not if it doesn't start a sentence.
If it's at the start of a sentence - yes, otherwise - no.
Yes
Yes it should.