Its aim is to teach English well.这句话中为什么要用to teach这个to do结构啊

Its aim is to teach English well.这句话中为什么要用to teach这个to do结构啊 My job is to teach English?为什么要用to teach Chinese to English the teacher is( )English teach/to teach/teaching/teaches My job is to teach them English 这句话有双宾语是不是相当于不定式老师吖 相当于句子结构来 teach sb to do You can get a teacher to teach you English,为什么用to teach My friend teach English to me.这句话语法对吗 teach sb sth.teach sb to do teach sb.to do sth. teach sb to do造句 to teach is my job