～となったら

When to use

となったら: if it comes to that (行くとなったら).

Explanation

The ～となったら grammar point is used to describe a situation where, if matters progress to that stage, a certain action or outcome will follow. It’s often translated as 'when it comes to...', 'if it comes to...'.

• 旅行りょこうに行いくとなったら、荷造にづくりをしなければいけません。

  If it comes to going on a trip, we have to pack.

  Ryokou ni iku to nattara, nizukuri o shinakereba ikemasen.

• 試験しけんに落おちるとなったら、どうしよう。

  What should I do if I fail the exam?

  Shiken ni ochiru to nattara, dou shiyou.

• 彼女かのじょと別わかれるとなったら、とても悲かなしいです。

  If it comes to breaking up with her, I’ll be very sad.

  Kanojo to wakareru to nattara, totemo kanashii desu.

• 結婚けっこんするとなったら、人生じんせいが大おおきく変かわるでしょう。

  When it comes to getting married, life will probably change drastically.

  Kekkon suru to nattara, jinsei ga ookiku kawaru deshou.

Conditional (If / Assuming That)

• A。すると B。~surutoN2Indicates that when action A is done, action or event B…
• もし～たならmoshi ~ tanaraN3Express a hypothetical condition, 'if' or 'in case'.
• もしも～ならmoshimo ~ naraN3Express a hypothetical condition or situation; 'if', 'in…
• ～からには〜kara niwaN2Express a sense of responsibility or determination…
• ～とあれば〜to arebaN1Expresses a condition; 'if', 'when', 'since'.
• ～とすると〜to suru toN1Expresses 'if', 'when', or 'assuming that' in a…
• Noun ともなれば〜to mo narebaN1Expresses 'if it comes to', 'when', or 'once'.
• ～上は～ue waN2Expresses 'now that', 'since', or 'once'.
• A。それなら B。A. Sore nara B.N2Express 'if that's the case, then'; used to show a logical…
• ～とすれば～to surebaN1Used to express 'if it were the case that...', 'if we…
• ～となると〜to naru toN1Used to highlight a certain circumstance; 'when it comes…
• ～となれば〜to narebaN1Expresses the idea of 'if it comes to...; when we talk…
• Noun ともなると〜to mo naru toN1'When it comes to...', emphasizes a change of situation or…

Compare when to use each