1、of course
读音：英[əv kɔːs]、美[əv kɔːrs]
释义：当然。
举例：Of course, if you provide a good pay.
如果你提供优厚报酬，那当然可以。
2、certainly
读音：英['sɜːtnli]、美['sɜːrtnli]
释义：adv. 当然；一定。
举例：You are certainly a talented artist.
你当然是位有天赋的艺术家。
3、sure
读音：英[ʃʊə(r)]、美[ʃʊr]
释义：adv. 当然；确实地；无疑地；不用客气。
举例：I had a feeling we'd get lost, and sure enough, we did.
我觉得我们迷路了，确实如此，我们迷路了。
