请问下面句中的simple predicate and subject都是什么?1.This book was studied two years ago.2.He has been informed.simple predicate为什么不适studied而是was?为什么不是informed而是has?

问题描述:

请问下面句中的simple predicate and subject都是什么?
1.This book was studied two years ago.
2.He has been informed.
simple predicate为什么不适studied而是was?为什么不是informed而是has?

1.predicate:was.subject:This book
2.predicate:has been informed.subject: He

1.was studied two years ago
2.has informed

simple predicate and subject 简单的谓语和主语
1.This book 主语 was studied 谓语 two years ago.
2.He 主语 has been informed.谓语