Be動詞的否定
在 am , is , are , was , were 后面加not.
縮寫式：am not , isn’t , aren’t , wasn’t , weren’t
1. The man isn’t back. 主系表結構
2. I am not back. be動詞根據主語決定時態，單復數
3. They aren’t back.
4. He wasn’t back.
5. They weren’t back.
Be動詞提問和回答
Is he a teacher ?
Yes , he is. / No , he isn’t.
Are you a teacher?
Yes , I am / No , I am not.
Were they teachers?
Yes , they were . / No , they weren’t.
Be動詞的練習
1. 他是醫生嗎？(doctor)
Is he a doctor ?
2. 他們昨天在教室嗎？（yesterday , classroom）
Were they in the classroom yesterday ? 通常時間放最后，地點在時間前面
3. 他們昨天不在教室。
They weren’t in the classroom yesterday.
Be動詞的否定/提問/回答
Be動詞的否定
在 am , is , are , was , were 后面加not.
縮寫式：am not , isn’t , aren’t , wasn’t , weren’t
1. The man isn’t back. 主系表結構
2. I am not back. be動詞根據主語決定時態，單復數
3. They aren’t back.
4. He wasn’t back.
5. They weren’t back.
Be動詞提問和回答
Is he a teacher ?
Yes , he is. / No , he isn’t.
Are you a teacher?
Yes , I am / No , I am not.
Were they teachers?
Yes , they were . / No , they weren’t.
Be動詞的練習
1. 他是醫生嗎？(doctor)
Is he a doctor ?
2. 他們昨天在教室嗎？（yesterday , classroom）
Were they in the classroom yesterday ?
3. 他們昨天不在教室。
They weren’t in the classroom yesterday.