当然可以用英语表达为：1、of course 一定，当然。2、sure 确信的；可靠的；必定的；当然；的确；当然。3、by all means 一定，务必；尽一切办法。
双语例句：
1.你当然可以为这种观点做解释。
You could certainly make a case for this point of view.
2.你当然可以通过直接给他们一笔捐赠来帮助他们。
You can of course help by giving them a donation directly.
3.“我能过来看看你的房子吗？”—“可以，当然可以。”
"Can I come and have a look at your house?"—"Yes, by all means."
4.“我可以就说说关于星期六的那场比赛吗？”—“可以，当然可以。”
"Can I just say something about the game on Saturday?"—"Yes, of course you can."
5.“我们当然可以，乔治。”她叫道。
"Of course we can, George," she cried.
6.我当然可以参加五月十四日的活动。
I can certainly manage May 14th.
7.当然可以，每个人都会带夫人来。
Sure. Everyone is bringing his wife.
8.我当然可以把它加到表格里。
I can certainly add that to the form.
9.您当然可以扩展这个集合，但是要小心。
You can certainly expand the set, but be careful.
10.你当然可以自给自足！
You certainly can help yourself!
