Grammar

Japanese Conditional Forms: たら vs ば vs と vs なら

仮N4–N3

Japanese has four main conditional forms — たら, ば, と, and なら — each with distinct nuances. Choosing the wrong one is one of the most common JLPT N4/N3 mistakes.

The four conditionals at a glance

たら (after something happens), ば (if X then naturally Y), と (automatic/natural result), なら (given that / assuming)

家に帰ったら、電話してね。いえにかえったら、でんわしてね。When/If you get home, call me.

毎日練習すれば、上手になる。まいにちれんしゅうすれば、じょうずになる。If you practice every day, you will get better.

春になると、桜が咲く。はるになると、さくらがさく。When spring comes, the cherry blossoms bloom. (always true)

日本に行くなら、京都がおすすめだ。にほんにいくなら、きょうとがおすすめだ。If you're going to Japan (given that), Kyoto is recommended.

Common mistakes

Wrong

Using と for a one-time personal action

Right

Use たら for one-time or personal future events

と implies automatic/natural causation (physics, universal truths). It sounds unnatural with volitional personal actions.

Wrong

Using なら for time sequence

Right

Use たら for sequential events

なら takes a given premise (like a topic marker). たら expresses "after X happens, Y".

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Frequently asked questions

What is the difference between たら and と in Japanese?

たら is used for specific, one-time, or personal conditional events ("if/when X happens in this case"). と implies an automatic, universal, or natural result — like a rule of physics or nature. You cannot use と for personal decisions or requests.

When should I use なら instead of たら?

なら means "given that" or "assuming X is the case" — it responds to information the speaker just received. たら is sequential ("after X, Y"). Use なら when someone tells you something and you respond based on that premise.