2. The boys were at the gym last Friday. The boys weren't at the gym last Friday.

В данном задании необходимо написать отрицательное предложение на основе утвердительного.

1. The boys were at the gym last Friday. The boys weren't at the gym last Friday.

Проанализируем предложение:

The boys weren't at the gym last Friday.

1. Подлежащее: The boys.

2. Сказуемое: weren't.

3. Обстоятельство места: at the gym.

4. Обстоятельство времени: last Friday.

Перевод: Мальчики не были в спортзале в прошлую пятницу.

Ответ: The boys weren't at the gym last Friday.