帮帮我 用“was”“wasn't”“were”“weren't”“is”“are”各造一个句子

I was a child 5 years ago
I wasn't a teenager 5 years ago
You were a teacher
You weren't a teacher
there is a hospital in the city center
you are a clever boy

“was”“wasn't”“were”“weren't”“is”“are”各造一个句子
She was a teacher.There was a swing before.这两句的否定式就用“wasn't” 过去时（单数）

They were students .These were red trees.这两句的否定式就用“weren't”过去时（复数）

“is”“are 分别是现在时的 单、复数 就简单多了

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