So far, you've learned how to say what something is using the basic structure AはBです, like in 「わたしはがくせいです」 ("I am a student"). But what if you want to say what something is not? That's where the negative forms ~じゃない and ~ではありません comes in!
Casual Versus Formal
As shown above, the negative form can be expressed in two ways:
1. Casual: ~じゃない
This is used in informal situations, like when talking to friends or family. For example, if you want to say "I am not a student" in a casual way, you would say 「わたしはがくせいじゃない」.
2. Formal: ~ではありません
This is used in more formal situations, like when speaking to someone you don't know well or in a professional setting. To say "I am not a student" formally, you would say 「わたしはがくせいではありません」.
✅ Example Sentences
Affirmative | Casual | Polite | English |
---|---|---|---|
がくせいです | がくせいじゃない | がくせいではありません | I am a student. → I am not a student. |
せんせいです | せんせいじゃない | せんせいではありません | I am a teacher. → I am not a teacher. |
いしゃです | いしゃじゃない | いしゃではありません | I am a doctor. → I am not a doctor. |
かいしゃいんです | かいしゃいんじゃない | かいしゃいんではありません | I am a company employee. → I am not a company employee. |
📝 Notes: