"Good morning, son" in Engpsh can be expressed as "早上好，儿子"。
The phrase "Good morning" is a common greeting used in Engpsh-speaking countries to greet someone during the morning hours. "Son" is a term of endearment and a famipal relationship, often used by a parent to refer to their male child.
Example in Engpsh:
Good morning, son. How did you sleep?
Son, I hope you have a good day at school today.
Translated to Chinese:
早上好，儿子。你睡得怎么样？
儿子，希望你今天在学校有个好的一天。