跪求英语句式如have sb to do sth 就这种形式的

have sb to do sth 是不存在的,应该是have sb do sth,这里的to必须省略,还有几个表示让某人做某事的句型必须省略to,是make sb do sth ,let sb do sth,还有一个表示让某人做某事的不能省略to是get sb to do sth 以上几个省略to 的,在被动语态里必须不省略to,例如：The teacher makes us do our homework,变成被动语态是：We are made to do our homework。当然还有很多象楼上说的那样的句型：ask sb to do sth order sb to do sth等等