What's the difference between ために/ため, ように and のに meaning "in order to"?


I know they all mean "in order to" and similar translations, sometimes however
I see that some are used instead of others. Also it's not clear if ために and ため
have different usages.

I know that ように is used with potential and negative forms, but I'm not too
sure.

hope someone can clarify!




I think the best way to explain this is with some examples

## ため

  * 国のために戦う ➝ Fight for one's country
  * チケットを買うために3時間並んだ ➝ I lined up for three hours to buy tickets.
  * 子供のための公演 ➝ A performance for children

"ため" is usually used in the context of someone doing something for someone
else, or doing something in order to accomplish something else.

## ように

  * 再発しないように頑張ります ➝ I'll try not to let it happen again
  * 風邪を引かないようにちゃんと寝てください ➝ Get some sleep so you don't catch a cold.

"ように" is more indirect, often in the context of _trying_ to do something as
opposed to a direct cause and effect.

## のに

  * TOEIC満点を取るのにやるべきこと ➝ Things you should do to get a perfect score on TOEIC
  * 大学に入るのに勉強の才能が必要だ ➝ You need to be good at studying in order to get into university.

"のに" usually is used when saying you need X in order to do Y (YするのにXが必要 or
YするのにXしないといけない).

I'm not a Japanese teacher or anything so let me know if that's hard to
understand (^_^).




I think the best way to explain this is with some examples

## ため

  * 国のために戦う ➝ Fight for one's country
  * チケットを買うために3時間並んだ ➝ I lined up for three hours to buy tickets.
  * 子供のための公演 ➝ A performance for children

"ため" is usually used in the context of someone doing something for someone
else, or doing something in order to accomplish something else.

## ように

  * 再発しないように頑張ります ➝ I'll try not to let it happen again
  * 風邪を引かないようにちゃんと寝てください ➝ Get some sleep so you don't catch a cold.

"ように" is more indirect, often in the context of _trying_ to do something as
opposed to a direct cause and effect.

## のに

  * TOEIC満点を取るのにやるべきこと ➝ Things you should do to get a perfect score on TOEIC
  * 大学に入るのに勉強の才能が必要だ ➝ You need to be good at studying in order to get into university.

"のに" usually is used when saying you need X in order to do Y (YするのにXが必要 or
YするのにXしないといけない).

I'm not a Japanese teacher or anything so let me know if that's hard to
understand (^_^).

