两种结构start to do ; finish to do

do you start to start to do 和start doing start dong 还是start to do sth start+to do还是doing begin to do= start to do,start doing =start to do finish to do和finish doing finish 有加to do sth begin to do和start to do有什么区别 Do you start to work?怎么回答 do know start you to when suggest doing sth/start to do sth. start doing sth.和start to do sth.的区别