It's the short form of the Latin phrase 'Ante Meridian' - meaning before noon. PM is short for 'Post Meridian' meaning after noon.
good morning
In English we write "Good morning" in two separate words.
To write "Good morning Everyone" in an email, start with a friendly salutation. You can write it as "Good morning, everyone," ensuring to capitalize "Good" and "Everyone," and include a comma after "morning." This sets a positive tone for your message. Following the greeting, you can proceed with the body of your email.
one morning
Bom-dia.
Hello, Robert Hillyer wrote "Early in the Morning" in 1917.
Amarillo by morning was written by Paul fraser and Terry Stafford in 1973..
In the morning means it is am. So it is 10:32 (in 24 hour)
Good morning, neighbor!
good morning
no
Present simple - write / writes I write to her everyday. She writes to me every week. Past simple - wrote I wrote to her this morning.