构建句子的时候，可以先构建只包含主谓的最简单的句子。然后再一点点把形容词、副词、介词、不定式之类的加进去，句子就变长了。要让孩子有意识，哪些是主要信息，哪些是补充信息。

比如：
I've got a car.
I've got a blue car.
I've got a blue car for my birthday present.
I've got a blue car for my birthday present from my father.