と・
と links a condition to a result that follows automatically, regularly, naturally, or logically. In courteous service or careful explanations, ですと can present the condition politely.
What kind of result follows
Use this conditional when the result is presented as the expected consequence of the condition—not merely as something someone chooses to do. It is especially natural for facts, habits, machine operation, directions, and calculations.
Regular and automatic results
An unplanned result in a past event
と can also describe a past sequence in which one action led directly to an unexpected result or discovery. This is a narrative reading, not a general rule. Even though the event happened in the past, the form immediately before と remains nonpast.
窓を開けると、庭に白い猫がいた。
Opening the window revealed a white cat in the garden.
AnalyzeThe cat was discovered after the window was opened; the sentence is not claiming that this always happens.
Choosing among common conditionals
と presents the result as what regularly or automatically follows. ば often highlights the condition that is enough to make a desired result possible. たら is more flexible for one-time events, requests, and planned actions. なら commonly responds to a premise or topic already under consideration.
More examples
温度が零度以下になると、水は凍ります。
When the temperature reaches zero degrees or below, water freezes.
Analyzeこのレバーを引くと、座席が倒れます。
Pulling this lever makes the seat recline.
Analyze祖母は昔の写真を見ると、いつも同じ話をしました。
Whenever my grandmother looked at old photos, she would always tell the same story.
Analyze角を右に曲がると、郵便局があります。
Turn right at the corner, and you'll find a post office.
Analyze学生の方ですと、入館料は半額になります。
For students, the admission fee is half price.
Analyze会場に着くと、入口に長い列ができていた。
Upon reaching the venue, there was already a long line at the entrance.
Analyze