GRAMMAR DETAIL
〜ないでください
Extends a negative verb form to politely ask the listener not to perform an action.
Examples
この部屋では写真を撮らないでください。
Please do not take photographs in this room.
Words used
大事な書類を捨てないでください。
Please do not throw away the important documents.
Words used
廊下を走らないでください。
Please do not run in the hallway.
Words used
Study notes
1. Origins, structure, and basic meaning
- Structure: Add
でくださいafter a verb'sないform. - Basic usage: It asks the listener not to act, as in
大事な書類を捨てないでください。.
2. Common pitfalls and similar expressions
- Form the negative first
- Attach it according to verb class, as in
撮る → 撮らないでくださいand捨てる → 捨てないでください. Do not mix this connection with reason-linkingなくて.
- Attach it according to verb class, as in
- Rule and request
走ってはいけませんpresents a prohibition on running;走らないでくださいforegrounds a request not to run. Even the polite form can be a firm instruction depending on the situation.