"The first letter of/for/in each month, such as June, July, etc., is big."

My was is taking online English classes right now. Yesterday, when he was taking a class, this question came to me.

I feel all three prepositions make sense. Which one sounds more natural? How would you say this?

Should I make it more complex?
For example, the first letter OF/FOR/IN the words for each month is big.

Thank you in advance. :)

Question

"The first letter of/for/in each month, such as June, July, etc., is big."

My was is taking online English classes right now. Yesterday, when he was taking a class, this question came to me.

I feel all three prepositions make sense. Which one sounds more natural? How would you say this?

Should I make it more complex?
For example, the first letter OF/FOR/IN the words for each month is big.

Thank you in advance. :)

Answer

The correct way to say it:  The first letter of the words for each month is capitalized.

No worries! :)

Answer

The first letter OF each month is capitalized. We use "OF" when one thing relates or belongs to another.

Answer

The first letter of July is a capital. Correct.

The first letter in July is a capital. Correct, but OF is better.

The first letter for July is a capital. No. I don’t like this.

Answer

"The first letter of each month is capital"
OF each month
"capital" is a better choice instead of "big" when you talk about letters

Answer

The first letter in the name of a month (or any other proper noun) should be capitalized.