ばあいは (baai wa) Meaning Japanese Grammar - In the Event of

Author Anna Baffa Volpe for article 'ばあいは (baai wa) Meaning Japanese Grammar - In the Event of'

Anna Baffa Volpe

ばあいは (baai wa) Meaning Japanese Grammar - In the Event of

The expression ばあいは (baai wa) means if, in the event of, in the case of, in some cases.

It is used in the hypothetical sentence introduced by the conjunction if.

In this post we learn more about the meaning of ばあいは, how it is formed and when ばあいは is used through real example sentences.

How ad when ()(あい)は is used

The expression ()(あい)は is used in the context of the hypothetical, of the conditional, of the if, of the possibility that.

It cannot be used for what has actually happened, but only to express a hypothesis that needs to be verified.

If A occurs or does not occur, ⇨ then B.


Tell me if you can't do it!

How ()(あい)は is formed

The expression ()(あい)は is formed:

  • by the noun ()(あい) meaning situation, condition, case
  • followed by the particle は

()(あい)は is preceded by verbs, nouns and adjectives.

Plain Form of the Verb+()(あい)+Phrase

Example with the Verb Ichidan (おく)れる be late, be delayed


If you are late for school, you must contact the school.


The noun 風邪(かぜ) means cold, flu and has the same pronunciation as (かぜ) which means wind.


Can I take a day off if I have a cold?

い Adjective+()(あい)+Phrase


If the rent is high...

な Adjective+()(あい)+Phrase

な Adjective: 必要な necessary, needed


Please call me if you need.


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The verb can be conjugated in various moods and forms; in the previous sentence, the suffix たい is used, which translates the verb want, desire.

Grammatical particles following ()(あい)

()(あい) is a noun and can be followed by various particles.

  • ()(あい)in the case that
  • ()(あい)によっては depending on the situation, in some circumstances
  • ()(あい)の when it is followed by a noun


What to do if your credit card is not accepted at the checkout


In case of rain, the match will be cancelled.


This drug can be poison or medicine depending on the situation.


In some cases, cigarettes are simply cigarettes.

Noun + + ()(あい) +


This law applies in all cases.

Examples of ()(あい)


If it is not possible, I will cancel the order.

We find in the sentence the adverb もし if which emphasises the condition expressed by ()(あい)は.


In case of fire, call 119.


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