sure 是很爽塊地回答可以,一定,無疑的.
of course 是理所當(dāng)然的意思.
兩者很多情況下能混用.
舉例,必須用sure的時(shí)候:
He is clever,to be sure,but not very hard-working.
She is sure to pass the examination.
必須用 of course的時(shí)候:
Mothers as a matter of course have much affection for their children.
I will write to you of course,but not every week.
祝你中秋快樂!