「〜てからでないと」- Conditional Sequence

Explanation

〜てからでないと is a grammatical structure used to express sequence and condition, meaning "if you don't do... first, you can't...". This structure is often used to indicate that a subsequent action cannot be performed or will result in a negative outcome if the prerequisite condition is not met.

Grammar Pattern

Grammar Point	Connection	Explanation
〜てからでないと	Verb て-form + からでないと	Indicates that the subsequent action can only be performed after the preceding action is completed, emphasizing the sequence and conditional relationship.

Basic Usage

〜てからでないと is primarily used to indicate that the subsequent action can only be performed after the preceding action is completed. This structure emphasizes the sequence and conditional relationship between the two actions.

Examples

• まずはやってみやってみてからでないと、できるかできないかは分わからない。
• Mazu wa yatte mite kara denai to, dekiru ka dekinai ka wa wakaranai.
• If you don't try it first, you won't know whether you can do it or not.
  

• 入り口いりぐちで入場券にゅうじょうけんを買かってからでないと入はいることはできません。
• Iriguchi de nyuujouken o katte kara denai to hairu koto wa dekimasen.
• You can't enter unless you buy a ticket at the entrance first.
  

• 信頼関係しんらいかんけいが築きずけてからでないとできないことがある。
• Shinrai kankei ga kizukete kara denai to dekinai koto ga aru.
• There are things you can't do unless you build a relationship of trust first.
  

Deep Dive

Usage Scenarios

1. Essential Prerequisite: Used to emphasize that a subsequent action can only be performed after a certain condition is met.
2. Avoiding Negative Outcomes: Used to express that if the preceding action is not completed first, it will lead to a negative result.

Real-Life Scenarios

Conversation Example

Scenario 1: Discussing Travel Plans

• 友人ともだちA：夏休なつやすみの旅行りょこうはどうする？
• Tomodachi A: Natsuyasumi no ryokou wa dou suru?
• Friend A: What are we doing for the summer vacation trip?
  

• 友人ともだちB：まず、予算よさんを決きめてからでないと、どこに行いくか決きめられないよ。
• Tomodachi B: Mazu, yosan o kimete kara denai to, doko ni iku ka kimerarenai yo.
• Friend B: First, we need to decide on the budget, or else we can't decide where to go.
  

• 友人ともだちA：そうだね、まずは予算よさんを決きめよう。
• Tomodachi A: Sou da ne, mazu wa yosan o kimeyou.
• Friend A: That's right, let's decide on the budget first.
  

Summary

〜てからでないと is a highly practical grammar point, especially important for expressing conditional and sequential relationships. Mastering this grammar point can improve your Japanese proficiency and make your expressions clearer and more precise.