I have another question.
When someone finishes
course, they can say: "I'm graduated", right? For example: "I'm graduated in Computer Science."
But, what if the person just finished a Master's degree? What can they say? ("I'm ______ .")
Thank you in advance!
É bom distinguir entre "course" e "program", no inglês norte-americano pelo menos. A course is a specific discipline (ex: Calculus) within a program (ex: Mathematics). So you'd say "I have graduated in mathematics," or "I'm a math graduate."
If you need to say you have a master's degree, then you'd say "I have a master's [degree] in math." or "I have my master's in math." For a doctoral degree you'd say "I have a/my Ph.D in math," or "I have a doctorate in math."