Will do sth 和Be doing sth的用法

Will do sth 和Be doing sth的用法 be to do sth和will do sth的区别 terrify的用法be terrified of sth/doing sth be terrified to do 这 use的用法.used to do sthbe used to do sth be used to doing sth try to do 和try to doing sth的用法? like to do sth 还有什么这样的用法?be fond of doing sth 或adore sth （ 是 be towards to doing sth 的用法 help to do sth help doing sth 的用法 help to do sth.&help doing sth.的区别、用法 be afeaid to do sth和be afraid of sth和be afraid of doing sth的 need to do sth和need doing sth的用法、意思和区别是什么? 我想知道 learn to do sth.和learn doing sth 的用法和区别