?开始去做

... set agood example to sb.给某人树立了好榜样 set about doing开始去做 set aside放一边、置之不理 ...

?着手

... keep watch 守望，值班，放哨 set about doing 着手，开始 set off 起程，出发 ...

?开始

... get rid of 除去；除掉 set about doing 开始；着手 in case （以防）万一；假使 ...

?开始做

... set about work 开始工作 set about sb 攻击 set about doing 着手 ; 开始 ; 开始去做 ; 开始做 ...