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1. The verb be as a main verb in the Simple Present
1.1. Affirmative sentences
Long formsContracted formsI am from London.I‘m from London.You are in my team.You‘re in my team.He is my brother.He‘s my brother.She is 15.She‘s 15.It is blue.It‘s blue.We are hungry.We’re hungry.You are in my team.You‘re in my team.They are nice.You‘re nice.
1.2. Negative sentences
Long formsContracted formsI am not from London.I‘m not from London.You are not in my team.You‘re not in my team.You aren’t in my team.He is not my brother.He‘s not my brother.He isn’t my brother.She is not 15.She‘s not 15.She isn’t 15.It is not blue.It‘s not blue.It isn’t blue.We are not hungry.We’re not hungry.We aren’t hungry.You are not in my team.You‘re not in my team.You aren’t in my team.They are not nice.You‘re not nice.You aren’t nice.
2. The verb be as a main verb in the Simple Past
2.1. Affirmative sentences
Long formsContracted formsI was alone.not possibleYou were in my team.He was my teacher.She was a friend.It was rainy.We were thirsty.You were there.They were friendly.
2.2. Negative sentences
Long formsContracted formsI was not alone.I wasn’t alone.You were not in my team.You weren’t in my team.He was not my teacher.He wasn’t my teacher.She was not a friend.She wasn’t a friend.It was not rainy.It wasn’t rainy.We were not thirsty.We weren’t thirsty.You were not there.You weren’t there.They were not friendly.They weren’t friendly.