富连成科班:stick to doing sth 什么意思？

stick to doing sth 什么意思？ be used to doing sth? look forward to (doing) sth.是什么意思啊？ stop doing to do sth 造句啊! how to doing sth是词组吗？ finish doing sth和 finish to do sth的区别？ go on to do sth.与go on doing sth. mean to do sth/ mean doing sth 什么意思? to do sth 和 doing sth 常见短语 begin to do sth 和 begin doing sth 是什么意思？