肯定：Yes,I do.
否定：No,I don't.
Of course./ Certianly./ 当然
It's my pleasure.这是我的荣幸.
I am afraid I can't.我恐怕不行. 肯定：Yes,I do.
否定：No,I don't.
Of course./ Certianly./ 当然
It's my pleasure.这是我的荣幸.
I am afraid I can't.我恐怕不行.