ashita ame ga furanakattara, tomodachi to issho ni kouen de sanposhimasu.

If it doesn’t rain tomorrow, I will take a walk in the park with a friend.

Breakdown of ashita ame ga furanakattara, tomodachi to issho ni kouen de sanposhimasu.

• 友とも達だち: friend
• と: companion particle
• が: subject particle
• で: location particle

Questions & Answers about ashita ame ga furanakattara, tomodachi to issho ni kouen de sanposhimasu.

Why does the conditional use the past-negative form 降らなかった in 降らなかったら?

Because the pattern 〜たら attaches to the plain past form, even when talking about the future. It doesn’t mean “past” here; it just forms the conditional “if/when.” Conjugation path:

• 降る (to fall) → 降らない (not fall) → 降らなかった (did not fall) + ら → 降らなかったら (“if it doesn’t rain” for tomorrow).

How do 〜たら, 〜ば, and 〜なら differ in this sentence?

• 明日雨が降らなかったら … (most neutral/natural for specific, time-bound conditions)
• 明日雨が降らなければ … (a bit more formal or general/hypothetical)
• 明日雨が降らないなら … (“if it’s the case that it won’t rain,” often based on an assumption or information like a forecast) All are correct, but 〜たら is the default choice here.

Can I add もし? Where does it go?

Yes. Put it at the start of the conditional clause: もし明日雨が降らなかったら、… / もし明日雨が降らなければ、… / もし明日雨が降らないなら、…. It adds “if by any chance/if indeed,” and is optional.

Why 雨が and not 雨は?