The article "an" is used before a word when the word begins with a vowel. "A" is used when the word begins with a consonant. The exceptions are when the word begins with a consonant but it sounds like a vowel, or when it begins with a vowel but it sounds like a consonant. There are very few exceptions. And I cannot think of one at the moment.
Before.
Instead of using I in a essay paper what word do you use?
or
You should use "a" before the word hope.
jahemum
When the first letter of the next word starts with a vowel or the letter H. But of course there are exceptions.... a humble opinion.
Before.
That is a general rule, but there are exceptions to virtually every rule. It would be better to avoid such commas.
Instead of using I in a essay paper what word do you use?
You can use the word "demanding" as a synonym for "challenging."
Will, when, why, it, can
or
The article "an" is used before "honest" because the pronunciation of the word begins with a vowel sound. This follows the rule that "an" is used before words starting with a vowel sound, while "a" is used before words starting with a consonant sound.
mixture
I have a stomach ache.
Myself
are