#84 [Bonus] Why does 〜ないように work? A Little Bit of Detailed Japanese Grammar

In the previous blog, we looked at the difference between 〜ために and 〜ように.

To keep it simple:
〜ために → you see an action as the goal
〜ように → you see a state or result as the goal

We also saw👇
忘れないように、メモします。Wasurenai yō ni, memo shimasu.
I make a note so that I do not forget.

遅れないように、早く家を出ます。Okurenai yō ni, hayaku ie o demasu.
I leave home early so that I am not late.

If you are studying Japanese at Basic or Intermediate level, you may already know the pattern:

ない-form + ように
But why does the negative form fit so naturally with ように?

Avoiding an unwanted result

Consider:
スマホを壊さないように、ケースをつけます。Sumaho o kowasanai yō ni, kēsu o tsukemasu.
I put a case on my phone so that I do not break it.

Right now, you have not broken your phone.
But if you drop it, you might end up breaking it. The case helps prevent that unwanted result.

So the goal is: スマホを壊さない — not to break the phone
You can also think of this as keeping the phone in its current, undamaged state.
In the previous article, we said that ように often looks towards a state or result.

Seen this way, 壊さない+ように starts to make more sense.
The speaker is doing something so that the unwanted result — breaking the phone — does not happen.

The same logic works with:
忘れないように、メモします。
The note helps prevent the result: 忘れる — forgetting

And:
遅れないように、早く家を出ます。
Leaving early helps prevent the result: 遅れる — being late

So one useful way to think about it is:
ない-form + ように → aiming for a situation where an unwanted result does not happen💡

But is the negative form always non-volitional?

Here it gets more interesting.
Last time, I introduced a common textbook rule:
ために → volitional verbs
ように → non-volitional verbs

So does that mean every negative form is non-volitional?
Of course not‼️
今日はケーキを食べない。Kyō wa kēki o tabenai.
I am not going to eat cake today.

That is something you can decide for yourself, right?
You can eat the cake, or you can choose not to eat it.
So ない-form does not automatically mean “non-volitional”.

And this is important⚠️
Language is not always made from perfectly neat logic.
You cannot simply learn one rule and expect every real sentence to fall beautifully into one of two boxes.

失敗しない＋ために vs 失敗しない＋ように

Compare these two sentences:
失敗しないために、何度も練習します。
Shippai shinai tame ni, nando mo renshū shimasu.
I practise many times in order not to fail.

失敗しないように、何度も練習します。
Shippai shinai yō ni, nando mo renshū shimasu.
I practise many times so that I do not fail.

In fact, both are natural Japanese. In both cases, the speaker practises because they do not want to fail.

So what changes? 

With 失敗しない+ために, the speaker treats “not failing” itself more directly as a goal.
In other words: I want to achieve the goal of not failing → so I practise.

Here, 失敗しない is viewed more like an intentional goal.

With 失敗しない+ように, however, the speaker looks more towards the result:
I practise → so that the unwanted result of failure does not happen.

So even with the same expression, 失敗しない, the grammar can change depending on whether you see it as:
a goal you want to achieve 
or
an unwanted result you want to prevent
That change in perspective can change the grammar.

Verbs do not always fit perfectly into two boxes

The terms “volitional verb” and “non-volitional verb” can make it sound as if every Japanese verb permanently belongs to one category.

Of course, some expressions are basically difficult to treat as intentional actions.

見える — can see / be visible
食べられる — can eat

You cannot simply decide, “I will be able to see it now,” and instantly enter that state. Likewise, the ability to eat something does not appear just because you decide to have it.

These are naturally understood as abilities or states rather than actions directly controlled by your will.

But not every expression is so simple.
Especially with negative forms, the same event may be seen as:

something you deliberately want to achieve
or
a result you want to avoid

That is why both 失敗しない+ために and 失敗しない+ように can work.
So whether something is “volitional” or “non-volitional” is not always decided by looking at the verb alone.
How the speaker chooses to view the situation also matters.

So how should learners remember this?

If you have just learnt 〜ように at Basic or Intermediate level, there is one thing I really want to say:
⚠️You do not need to memorise all these fine distinctions yet.

Start with the basic textbook pattern.

忘れないように
遅れないように
壊さないように
ない-form + ように is extremely common.

For now, it is enough to learn it as a useful pattern and become comfortable using it.

If you stop in every conversation to ask,
“Is this volitional, so should I use ために?”
“Or is this more like a state, so should I use ように?”
you will probably make speaking much harder than it needs to be🤣

Later, you will start noticing Japanese outside the textbook

As your Japanese improves, something interesting happens.

You watch dramas, talk to Japanese people, read articles, and eventually you find expressions that make you think:

“Wait... that is not the rule I learnt.”🤔

Perhaps you see: 失敗しないために
and think:
“Why is ために being used with the negative form?”
That is the right moment to come back to this article‼️

You may realise:
“Ah, here the speaker is treating ‘not failing’ itself as an intentional purpose.”
Then it stops looking like a strange exception.
And I think this is a good order for learning.

First: Learn the basic pattern.
Then: Notice something outside the pattern in real Japanese.
Next: Understand why that different usage is possible.
Finally: Try using it yourself.
That is how you can gradually move from textbook Japanese towards the Japanese that native speakers actually use.

Reflection

Trying to learn every exception from the beginning is exhausting.
So at first, keep the rules simple. That is enough.

But as you improve, you will inevitably meet Japanese that does not match the rule perfectly.
For me, that is where language becomes interesting.

Instead of simply saying,
“It is an exception, so I just have to memorise it,”
try asking:
“Why is this expression possible here?”

Sometimes, the answer lies in how the speaker is looking at the situation.
Once you start to see that, you can try using the new pattern yourself.
You do not need to sound like a native speaker from day one.

Thank you for reading!
I regularly post Japanese-related content, including idioms and expressions, so if you’re interested, I’d be very happy if you followed me on Instagram.👍