I wrote "we will catch up sometime" to one of my new friends. When I searched the Internet I found that people used it in informal situations. Is it okay to use this in formal writing as I did since ...
I'm not always comfortable with phrasal verbs. I find that Americans use a lot of phrasal verbs than say people from UK -- I might be completely wrong though. What I find most difficult with phrasal ...
I really think I've heard it in some American sitcom/sitcoms, meaning something like participating in. "I want to play football. Who's in?" — "Great idea, I'm in!" Does it really exist, or am I wrong? ...