I'm not a teacher!
I'm really angry with you and I mean it. (I'm serious about it)
A:Could you bring me a tea? B: Of course, by all means. (certainly)
There are many means to fight crime. (....many ways...)
A: Friendship is just a sparrow stray between the fall and the spring.
B: What do you mean? I didn't understand.
I hope that somewhat helps.
- For Teachers