(2) 接不带to的不定式作宾补的动词有feel (感觉); hear、listen to(听); see、watch、notice、observe (看); let、make、have (使)等。(一感二听三使四看)如: He made us laugh. 他使我们大笑。 比较:We were made to laugh. (3)在help后作宾补的不定式可带to也可不带to。如: She often helps her mother (to) do some housework. 她经常帮母亲做家务活。