～かは～によって（ちがう）

About

The 「～か(どうか)は～による」 pattern is used to express that something differs depending on the person/time/place/etc.

～かどうか can be used for "X depends on whether or not Y" sentences.

E.g. お酒さけで顔かおが赤あかくなるかどうかは、体質たいしつによって違ちがうらしい。 "Apparently, whether or not someone turns red when drinking alcohol differs depending on their predisposition (to alcohol)."

～か should be used for any "question-word" (e.g. 何, どこ, いつ, etc.) sentences.

E.g. 何歳なんさいから車くるまが運転うんてんできるかは、国くにによって違ちがいます。 "From what age you are able to drive, differs depending on the country."

The ～か(どうか)は～による pattern employs the は particle to denote the options marked by か(どうか) as the topic of discussion.

The ～か～かは～による pattern is used when we want to explicitly present two options, and express "which of these two options is X, depends on Y".

The ～か(どうか)は～による pattern can be appended with verbs such as 違ちがう, 異ことなる, 決きめる, and 変かわる. These will attach to よる's て form, 「よって」.

Summary

• 

  The 「～か(どうか)は～による」 pattern is used to express that something differs depending on the person/time/place/etc

• 

  ～かどうか can be used for "X depends on whether or not Y" sentences

• 

  ～か should be used for any "question-word" (e.g. 何, どこ, いつ, etc.) sentences