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Grammar Book

GrammarBook: もしかしたら (Adverb: Perhaps / Possibly / Maybe)

  • 17 Aug, 2026
  • Com 0

N4-G-063

もしかしたら (Adverb: Perhaps / Possibly / Maybe)

Supporting / Low Probability & Speculation

👀 Layer A: Visual Guide



📝 Quick Summary

もしかしたら (moshikashitara) is an adverb used to express a slight possibility or hunch (“perhaps”, “possibly”, “maybe”). It indicates a lower level of probability (~20–50%) and almost always pairs with the sentence-ending pattern 〜かもしれません (might / may).

Structure: もしかしたら + [Sentence Clause] + 〜かもしれません
Example 1: もしかしたら あした あめが ふる かもしれません (It might possibly rain tomorrow).
Example 2: もしかしたら かれは こない かもしれません (He might possibly not come).

🔗 Connected Grammar:

  • N4-G-061: きっと (Adverb: Surely / I’m sure that)
  • N4-G-062: たぶん (Adverb: Probably / Perhaps)
  • N5-G-039: かもしれません (Might / Maybe)

🔍 Layer B: Deepening

💡 Raya’s Hack

The Golden Pair: もしかしたら … かもしれません!
Always align your starting adverb with the matching sentence ending:

– きっと (kitto): ~90%+ certainty ➡️ Pairs with はずです / でしょう
– たぶん (tabun): ~50-70% certainty ➡️ Pairs with でしょう / とおもいます
– もしかしたら (moshikashitara): ~20-50% certainty ➡️ Almost ALWAYS pairs with 〜かもしれません!

When you hear someone start a sentence with moshikashitara, your brain should immediately expect kamo shiremasen at the end!

🚧 Joy’s Mistake

Scene: Joy is guessing about Tanaka-san’s arrival.

Joy: 「たなかさんは もしかしたら くる でしょう。」
(Tanaka-san wa moshikashitara kuru deshou.)

❌ Paired “moshikashitara” with “deshou”!

Why?

Deshou indicates a higher level of expectation (~70%). Because moshikashitara represents a lower, uncertain possibility (~20-50%), it must pair with 〜かもしれません.

Correct: 「たなかさんは もしかしたら くる かもしれません。」 (Tanaka-san might possibly come.)

🔥 Layer C: Retrieval Practice Loop

Retrieve and apply! Express low probability and possibilities. (Hiragana and English only)

Level 1: Structure Building (もしかしたら + Sentence + かもしれません)

Q1. Might possibly rain (あめが ふる)
答え: もしかしたら あめが ふる かもしれません
Q2. Might possibly be late (おくれる)
答え: もしかしたら おくれる かもしれません
Q3. Might possibly not come (こない)
答え: もしかしたら こない かもしれません
Q4. Might possibly be a mistake (まちがい)
答え: もしかしたら まちがい かもしれません
Q5. Might possibly be true/real (ほんとう)
答え: もしかしたら ほんとう かもしれません

Level 2: Full Sentences

Q6. It might possibly rain tomorrow. (あしたは / あめが ふる)
答え: あしたは もしかしたら あめが ふる かもしれません。
Q7. Tanaka-san might possibly be late. (たなかさんは / おくれる)
答え: たなかさんは もしかしたら おくれる かもしれません。
Q8. He might possibly not come today. (かれは きょう / こない)
答え: かれは きょう もしかしたら こない かもしれません。
Q9. This information might possibly be a mistake. (この じょうほうは / まちがい)
答え: この じょうほうは もしかしたら まちがい かもしれません。
Q10. That story might possibly be true. (あの はなしは / ほんとう)
答え: あの はなしは もしかしたら ほんとう かもしれません。


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Related posts:

GrammarBook N4 : Verb(dict) + と (If/When – Automatic) GrammarBook N4 : Noun+の+よていです (Scheduled for…) GrammarBook N4 : I adjective plain form+かもしりません (Might be) GrammarBook N4: Verb (dictionary form) + とおりに (Exactly as)
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