Make these sentences negative He is a good boy.
We are happy.
I´m eight years old.
My dad is angry.
Andrea and Sam are sisters.

he isn't a good boy.

we aren't happy.

im not eight years old.

my dad isn't angry.

andrea and sam aren't sisters.

1. He's not a good boy.

2. "We are unhappy." или "We are not happy."

3. I'm not eight years old yet.

4. My dad is not angry.

5. Andrea and Sam are not sisters.

Объяснение:

Самым главным элементом отрицания в английском языке является частица not. Ставить ее следует после вс или модального глагола. Если же вс глаголов несколько, то после первого из них.