[lojban] Japanese has no subjunctive??

[Robin Lee Powell <lojban-out@lojban.org>]

    My wife reports that subjunctive grammar, e.g. if I had studied,
    I would have done better on the test, are very difficult, since
    none of this grammar is found in Japanese.

If this is true, and I find it unlikely, how do the Japanese talk
about subjunctives?  Or do they simply (and I find this
unimaginable) not do so?

-Robin

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