1. (E-mail)

Question

Hello. Ms. Kim.
It's me, Tom.
Today.......

(What does 'It' refer to? Why is 'It' used here?)

2. I'm in an English movies with subtitles club. We watch English movies together every four months/four times a year. I can learn lots of useful English expressions. It's difficult but fun.

3. I'm in a climbing mountains club.
We climb mountains every fourth month together. It is great to shout at the top of a mountain.

4. I'm in a sports newspaper club.
We make a sports newspaper. Each member write an article about sports and make a sports newspaper together. It's exciting and fun.

(Would you check the passages about club activities? Correct errors,please.)

Answer 1

1. (E-mail)
Hello. Ms. Kim.
It's me, Tom.
Today.......

(What does 'It' refer to? Why is 'It' used here?)
"It" is just an introductory word in this usage. It's a pronoun, but in this case, there is no noun that it refers to. In this case, I guess you'd call it an idiom.

2. I'm in club in which we watch English movies with subtitles. We watch English movies together every four months/four times a year. I can learn lots of useful English expressions. It's difficult but fun.

3. I'm in a club for people who like to climb mountains. We climb mountains every four months together. It is great to shout at the top of a mountain.

4. I'm in a sports journalism club. We publish a sports newspaper. Each member writes an article about sports and contributes to the newspaper. It's exciting and fun.

(Would you check the passages about club activities? Correct errors,please.)

Let me know if you have any questions.

Answer 2

#2 should read:

I'm in a club in which ...