1、當然可以用英語是:Certainly,[英][ˈsɜ:tnli][美][ˈsɜ:rtnli]。
2、你當然可以通過直接向他們捐款來幫助他們。You can of course help by giving them a donation directly。
3、你當然可以想方設法擺脱,但最後你會發現自己還是像以前一樣拼命抽煙。You can simply go on putting off the evil day and eventually find yourself smoking as much as ever。