英语语法：teach sb to do sth 这里面的to do 算是动词不定式吗?

英语语法：teach sb to do sth 这里面的to do 算是动词不定式吗? teach sb sth.teach sb to do teach sb.to do sth. teach sb do sth 还是teach sb to do sth have sb (to)do sth,这里动词不定式省略了TO 请问,have sb do sth 中do 是省去to的动词不定式作宾补 teach sth. 还是 teach sb.to do sth.抑或teach sb. do sth. teach sb to do sth 怎样造句? teach sb. sth. 与teach sb.to do sth.的区别 teach sb doing sth和teach sb to do sth的区别 用句型造句用不定式做宾补+V.1.have sb to do sth2.teach sb to do sth 3.wou 英语语法疑惑我都知道appreciate 后面不能接动词不定式（例如appreciate sb to do sth）,一