英语对划线部分提问什么时候用is或dodose

Question

英语对划线部分提问什么时候用is 或do dose

Answer 1

看句中的谓语动词, 有is,就用is提问.谓语动词是原形, 用do.谓语动词是三单,加s,就用does.谓语动词是过去式ed, 就用did
He is 14. He isn't 14.
He is playing basketball. He isn't playing basketball.
He plays bastetball well. He doesn't play basketball well.
They go to school on foot. They don't go to school on foot.
I washed　my　clothes　yesterday．　　Ididn't wash my clothes yesterday.
注意：用了does和did之后,原来的动词用原形