Чем отличается тема was were с had

1. Was, were - формы ошибочного глагола to be (быть, находиться) в прошедшем времени. Was - для первого и третьего личика единственного числа, were - для we, you, they. К примеру: I was born in 2011. They were at school yesterday.

2. Had - форма ошибочного глагола to have (иметь) в прошедшем медли для всех лиц. К примеру: He had five lessons yesterday. They had breakfast at eight oclock.