84305
For the sentence _" The container quality has to be good. **Only then** would
the contents inside be good."_

My teacher suggested _" 入れ物の品質がよくなければ、中身もよくない"_

But I'm not sure this conveys the necessary condition of the container quality
being good for the stuff inside it to be good as well. I was also considering
_中身の良さのために、入れ物の品質の良さが必要です_ works but it sounds a bit clunky to me.
CC BY-SA 4.0
2021-02-22T07:21:03.217
84301
2021-02-22T23:13:09.433
36831
question
grammar
How to convey 'If X, only then Y'?
"入れ物の品質がよくなければ、中身もよくない" means "If the container is not good, then the contents
are not good".

That means, if the container is not good, the contents can't be good. However,
just because the container is good, doesn't mean the contents are necessarily
good (they can still be bad).

If that's what you are trying to say, "入れ物の品質がよくなければ、中身もよくない" is perfectly
good.

If the container determines if the content is good or bad (so that, if the
container is good the content is always good, and if bad the content is always
bad), you could say "入れ物の品質が、中身の品質を決める", "入れ物が良ければ中身も良いし、よくなければ中身もよくない".
CC BY-SA 4.0
2021-02-22T23:13:09.433
84305
2021-02-22T23:13:09.433
499
84301
answer