Am not, Isn't, Aren't (A1)

用 am 说“不”，就加上 not：I'm not = I am not。

I'm not

• I am not here.
• I'm not a teacher.
• I'm not ready.
• Not "I amn't ready." — say "I'm not ready.". I 的否定形式是 I'm not——没有 “amn't” 这种说法。
• 试一试: ___ a teacher. (I'm not / I isn't / I aren't) 答案: I'm not — I'm not a teacher. I 的否定形式只有 I'm not，从来不是 isn't 或 aren't。

isn't

用 is 说“不”，就加上 not：isn't = is not。

• He isn't here.
• She isn't here.
• It isn't here.
• Not "He not is here." — say "He isn't here.". not 接在 is 后面 → isn't，不是放在它前面。
• 试一试: Sofia ___ here. (isn't / aren't / not is) 答案: isn't — Sofia isn't here. Sofia 是一个人（she），所以否定词是 isn't，不是 aren't。

aren't

用 are 说“不”，就加上 not：aren't = are not。You 永远用 are / aren't。

• You aren't here.
• We aren't here.
• They aren't here.
• Not "They isn't here." — say "They aren't here.". we, they 和 you → aren't，从来不用 isn't。
• 试一试: They ___ students. (aren't / isn't / not are) 答案: aren't — They aren't students. They 是不止一个人，所以否定词是 aren't，不是 isn't。

not 放在哪里？

not 放在 am / is / are 后面。

• I am not ready.
• She is not ready.
• They are not ready.
• Not "She not is ready." — say "She is not ready.". 先是 be 动词，再是 not。
• 试一试: We ___ ready. (aren't / isn't / not are) 答案: aren't — We aren't ready. We 是不止一个人 → aren't。not 接在 are 后面。