限定动词
英语上根据动词在句法上是否受到主语的限定，英语动词有可以分为限定动词(Finite Forms of Verbs)和非限定动词(Non-Finite Forms of Verbs)。
限定动词又叫谓语动词，在句中充当谓语，在人称和数上必须和主语保持一致，同时还表现出时态、语态和语气的变化。如：
I play basketball.
He plays basketball.
They played basketball yesterday.
The cars are made in China.
