begin to do,begin doing,start to do ,start doing.都对吗?

start / begin doing 与 start / begin to do 是什么 START TO DO 和 START DOING 的区别 BEGIN TO DO 和 BEGIN DOING 的区别. start to do sth与start doing sth与begin to do sth以及begin doing start to do,start doing,begin to do,begin doing的区别和联系? begin to do,begin doing,start to do ,start doing有什么区别? begin to do= start to do,start doing =start to do Begin和start后doing和to do的区别? begin doing sth.=start to do sth.=start doing sth.吗? start和begin有什么区别?有start+doing或to do,又有什么区别? begin to do/begin doing的区别 begin doing 和 begin to do begin to do or begin doing ?