All I have to do is do sth=doing sth=to do sth?

have sth to do sth 什么意思 ? have sb do sth =get sb doing sth? all i have to do is to do sth use sth to do sth =use sth for doing have sth doing / have sth to do/ have sth do/ have sth done have nothing to do but do sth还是doing sth make sth+do\to do=sth It is not necessary to do sth enjoy doing sth I like to have have sth to do have to do sth All you have to do is do sth use sth doing sth还是use sth to do sth by to do sth=by doing sth吗