decide on doing 对吗

decide on doing 对吗 decide on例句,不加doing的 有decide doing sth.吗?为什么书上写decide on(upon) sth./doing sth.? decide against doing 和decide on not doing有什么区别 decide on doing sth 有这种用法么 用sigh over ,be worth doing ,decide on造句 decide on the time spending on doing sth对吗 decide+doing or decide+to do 用decide on 造句 decide on和decide 有区别吗 decide和decide on有什么区别?