be动词的否定提问和回答

be动词的形式：

  be,is,am,are,was,were,being,been

be动词的否定：

  在be,is,am,are,was,were后面加not，

  缩略式：am not,isn’t,aren’t,wasn’t,weren’t

  1.The man isn’t back.

  2.I am not back.

  3.They aren’t back.

  4.He wasn’t back.

  5.They weren’t back.

  使用be动词提问和回答

  1.Is he a teacher?

  –Yes, he is. / No,he isn’t.

  2.Are you a teacher?

  –Yes, I am. / No, I am not.

  3.Were they teachers?

  –Yes, they were. / No, they weren’t.

Be动词的练习

  1.他是医生吗？

  Is he a doctor?

  不，他不是。

  No, he isn't.

  2.他们昨天在教室吗？

  Were they in the classroom yesterday?

  是的，他们在。

  Yes, they were.

  3.他们昨天不在教室。

  They weren’t in the classroom yesterday.