want sth想要某物（名词或代词作want的宾语）

      例：I want some tomatoes.

    want to do sth想做某事（动词不定式作want的宾语）

      例：He wants to see a film.

    want sb to do sth想让某人做某事（动词不定式做宾语sb的补定语）

      例：Ted's father wants him to have two cakes.

2. would like想，想要

     would为情态动词，没有人称和时态的变化。

     would like sth想要某物

       例：I would like some tomatoes.

     would like to do sth想做某事（动词不定式做would，like的宾语）

       例：I would like to see a film.

     would like sb to do sth想让某人做某事（动词不定式做宾语sb的补足语）