yane o naoshitaato, tenjou no shimi ga kiemashita.

direct object particle

Breakdown of yane o naoshitaato, tenjou no shimi ga kiemashita.

• が: subject particle
• の: possessive case particle
• あと: after

Questions & Answers about yane o naoshitaato, tenjou no shimi ga kiemashita.

What does 屋根を直したあと mean, and how is it formed?

• 屋根 (やね) means “roof.”
• を marks 屋根 as the direct object of the verb 直す (なおす), “to repair/fix.”
• 直した is the past tense of 直す, so it means “repaired.”
• あと means “after.” When you attach あと to the past-tense verb, you get a time expression: “after having done [that action].”
  So 屋根を直したあと = “after having repaired the roof.”

Why is the verb 直す in the past tense before あと?

When you want to say “after doing X,” you put the verb in its past-tense plain form ( ～た form) + あと. That shows X is completed before the next action. If you used the non-past form ( 直すあと), it wouldn’t be grammatically correct for “after.”

Could you use してから instead of したあと? If so, is there any nuance difference?

Yes. You could say 屋根を直してから、天井のしみが消えました。 Both mean “after repairing the roof, the stain on the ceiling disappeared.”

• ～てから often feels more immediate or sequential: “as soon as I repaired the roof, then…”
• ～たあと is a bit more neutral/time-stamp-like: “after I’d repaired the roof.”
  In most contexts they’re interchangeable.

Why is 天井のしみ using の instead of を?