do sth /to do sth 这里的do 指代的是动词原形吗?如：let sb do sth / ask sb to do sth.这里的do 除了能指代 动词原形外,能不能是它本身啊?例如：ask him to do that matter.

use sth to do sth的do在这里是什么意思 do sth to do have sth to do need sth to do plan to do sth come to do sth hope to do sth only to do sth dream to do sth bother to do sth have to do sth want to do Sth try to do sth decide to do sth eager to do sth except to do sth Want to do sth? try to do sth