てこそ
🃏 Flashcard
てこそ
te koso
Tap to reveal usage
now that; since (something happened)
N2
Tap to test your recall · +10 XP
📊 Pattern Stats
JLPT Level
N2
Upper-Intermediate · Academic & formal usage
Reading
te koso
Post ID
51150
Patterns today
0
0 / 10 daily goal
📝 Usage Notes
now that; since (something happened)
📖 How to use it
Indicates that something is true or should be done precisely because a certain condition or event has occurred.
Attaches to
Attach to the te-form of a verb: verb te-form + koso.
This pattern emphasizes that the action or state expressed by the te-form is the necessary and sufficient reason for what follows. It is often used in statements of realization, justification, or strong conviction. For example, after experiencing something, you might say '見てこそわかる' (Only after seeing it do you understand). It is more emphatic than simply using 'から'.
実際にやってこそ、その大変さがわかる。
Jissai ni yatte koso, sono taihensa ga wakaru.
It's only by actually doing it that you understand how hard it is.
彼と話してこそ、彼の本当の気持ちがわかる。
Kare to hanashite koso, kare no hontou no kimochi ga wakaru.
Only by talking with him do you understand his true feelings.
この問題は、時間をおいてこそ解決できるかもしれない。
Kono mondai wa, jikan o oite koso kaiketsu dekiru kamoshirenai.
This problem may be resolved only after some time has passed.
Not てから
てから simply means 'after doing' without implying that the earlier action is the essential reason for the later result. てこそ adds a strong 'only because' or 'precisely because' nuance.
Register
Somewhat formal and emphatic; used in writing and formal speech, but also in spoken language for rhetorical effect.
🎯 Quick Quiz
What does this grammar pattern mean or do?
てこそ
📚 How to Master This Pattern
Say It Aloud
Press Hear it and repeat てこそ three times. Feel the rhythm — grammar patterns have a natural flow.
Flip Before Reading
Always try to recall the usage before flipping the card. Struggle = learning. Every failed recall makes the next one stick harder.
Write Two Sentences
Compose two original sentences using てこそ. One about yourself, one about something you see right now.
Spaced Review
Save this pattern and revisit at 10 min, 1 day, 3 days. Production (writing) beats recognition for grammar.
🔗 More JLPT N2 Patterns
❓ Frequently Asked Questions
What does the grammar pattern てこそ mean?
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Now that; since (something happened)
What JLPT level is てこそ?
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Nihoner currently groups this pattern under JLPT N2 — Upper-Intermediate · Academic & formal usage. Use the level label as study guidance rather than a prediction of what will appear on an exam.
How do you use てこそ in a sentence?
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Attach てこそ (te koso) to the appropriate verb or noun form as described in the usage notes. Then try writing two original sentences — one about yourself and one about something around you.
Is てこそ formal or casual Japanese?
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てこそ is used in formal or written contexts. You will see it mainly in written texts, news, business Japanese and academic contexts.
How can I remember てこそ long-term?
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Use the flashcard on this page for active recall — see the pattern, reconstruct the usage from memory, then flip. Follow with the 4-choice quiz to distinguish it from similar patterns. Review later the same day and again over the following days. Writing original sentences can help you practise using the pattern in context.