ようによっては / ようでは

This grammar pattern expresses that the outcome or result changes depending on how something is done. It combines よう (way/manner) with によっては (depending on) or では (if/in the case of) to convey the idea that the method, approach, or manner of doing something can lead to different – often significantly different – outcomes.

ようによっては – "depending on the way…"

This form emphasizes that a particular way of doing something could lead to a certain (often positive or at least possible) outcome. It suggests that among various approaches, some may produce favorable results.

The verb stem + よう creates a noun meaning "the way of doing ~" (e.g., かんがえよう考えよう = the way of thinking, やりよう = the way of doing). This noun is then followed by によっては to mean "depending on."

ようでは – "if the way of doing something is (bad)…"

This form typically carries a negative or critical nuance. It warns that if things continue to be done in a certain (usually undesirable) way, the outcome will be bad. It is used to express concern, disapproval, or a warning.

Key difference

• ようによっては is relatively neutral – it highlights that different approaches yield different results, and often implies a positive possibility.
• ようでは tends to be critical or cautionary – it points out that a particular way of doing something will lead to undesirable consequences.

Formation

The pattern is formed with the verb stem (ます-stem) + よう to create "the manner/way of doing":

• する → しよう → しようによっては / しようでは
• ゆう言う → 言いよう → 言いようによっては / 言いようでは
• かんがえる考える → 考えよう → 考えようによっては / 考えようでは
• つかう使う → 使いよう → 使いようによっては / 使いようでは