N4-G-014
Verbて＋しまいました (Completion / Regret – Past)
Core / Past Emotions & Apologies
👀 Layer A: Visual Guide
📝 Quick Summary
This is the past tense form of “te-shimaimasu”. It is used to express that an action is completely finished with nothing left, or that an action happened by accident, leaving you with a feeling of regret. Because it is in the past tense, it implies “there is no going back.”
Structure: [Verb て-form] + しまいました。
Completion: ほんを ぜんぶ よんで しまいました (I finished reading the whole book).
Regret: かさを わすれて しまいました (I unfortunately forgot my umbrella).
🔗 Connected Grammar:
🔍 Layer B: Deepening
💡 Raya’s Hack
The “Apology” Combo!
In Japanese culture, showing that you feel bad about a mistake is just as important as the apology itself. If you only say “Sumimasen, wasuremashita” (Sorry, I forgot), you sound a bit cold—like a robot stating a fact.
To show genuine human emotion and regret, ALWAYS combine “Sumimasen” with “Shimaimashita”:
「すみません、わすれて しまいました。」 (I am so sorry, I accidentally forgot it.)
This makes you sound much more empathetic and fluent!
🚧 Joy’s Mistake
Scene: Joy arrives late to meet his teacher.
Joy: 「せんせい、おくレました。」
(Sensei, okuremashita.)
❌ Too robotic!
Why?
“Okuremashita” is just stating the objective fact that you are late. It carries zero apology or regret. If you say this to a teacher or boss, they might think you don’t care! You must use the Te-form + Shimaimashita to show you didn’t mean to do it and you feel bad.
Correct: 「おくれて しまいました。」
🔥 Layer C: Practice Loop
Test your knowledge! (Answers in Hiragana and English)
Level 1: Form the “Regret/Completion” Past Tense
Q1. To forget (わすれる)
Q2. To drop (おとす)
Q3. To lose something (なくす)
Q4. To drink (のむ)
Q5. To break (こわれる)
Level 2: Full Sentences
Q6. I finished reading all the books.
Q7. I accidentally broke my smartphone. (スマホ、こわす)
Q8. I am sorry, I unfortunately forgot my homework. (しゅくだい)
Q9. I unfortunately lost my ticket. (きっぷ)
Q10. I accidentally fell asleep (overslept). (ねる)
