英语句法之基本句型(1) Frank is a teacher.(2) My Mom enjoyed this play

英语句法之基本句型
(1) Frank is a teacher.
(2) My Mom enjoyed this play .
请问这两句分别为基本句型中的哪两个句型?如何区分这两种句型?
（3）The firm gave Sam a watch.
(4) They made Sam chairman.
麻烦说明一下区分这些句型的方法！