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be动词 + 名词 the winner 冠军，优胜者，赢家

I am the winner.

You are the winner(s).

He / She is the winner.

We are the winners.

They are the winners.

I am not the winner.(I'm not the winner.) 

You are not the winner(s).(You aren't the winner(s).) 

He is not the winner.(He isn't the winner.)

She is not the winner.(She isn't the winner.)

We are not the winners. (We aren't the winners.)

They are not the winners.(They aren't the winners.)

Am I the winner?

Are you the winner(s)?

Is he / she the winner?

Are we the winners?

Are they the winners?

(to) be 的过去时

I was (I wasn't)

You were (You weren't)

He was (He wasn't)

She was (She wasn't)

It was (It wasn't)

We were (We weren't)

They were (They weren't)

Was I …? 

Were you …? 

Was he …?

Was she …?

Was it …?

Were we …?

Were they …?