use to do sth和use doing sth怎么区分啊

use sth doing sth还是use sth to do sth use to do sth等于 “use to do sth”用法 use sth to do sth =use sth for doing use sth.to do sth.和do sth.with sth.意思一样吗 use to do sth和use doing sth怎么区分啊 use ...for sth 和use...to do sth有什么不同么? use to do sth等于什么词组 use to do sth.造句 配中英文, use to do sth.造句 配中英文, use后加to do sth use to do sth.的中文意思 use sth to do sth的do在这里是什么意思 use sth to do sth和use sth for dong sth有什么区别最好举个例子 use to do和use doing 和use for doing sth有什么区别以及中文解释 be used to do sth,be use to doing sth,be use to sth,be use for sth区别 use to do sth.造句（中英文对照）use to do sth.造句 配中英文,急! use sth to do sth相当于use sth for doing sth但use sth for sth这个短语是不是和上面的了可以互换.比如：People can use the tusks for piano keys and other beautiful things.