Grammar Info

N1 Lesson 1: 17/25

となるとWhen, If, Once, As

〜なったら is also used. Often in casual speech.

Structure

Noun + (1) + + なる(2)
Verb[る]+ + + なる(2)

(1)
(2) なれば

Details

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About ともなると・にもなると

となると is a strong expression in Japanese that focuses on highlighting that once some relatively high threshold is reached, (B) will occur. While となると may be seen in several different forms, the base structure is a combination of the particle と, the う-Verb なる 'to become', and the particle と repeated in its use of highlighting a certain outcome. Standard translations are 'once (A), (B)', and 'when (A), (B)'. A more literal translation can be thought of as 'once (A) happens, it is sure to follow that (B)'.

The other forms that となると may be seen in are ともなると, となれば, and ともなれば. The primary difference being that も adds slight emphasis. While ば and と do have slightly different nuances by default, in terms of this specific grammar point, they are used completely interchangeably.

となると may be seen following nouns, or verbs in any of their standard form.

も may also be used following the subject of ともなると sentences, and simply places emphasis on that subject.

Fun Fact

The emphasis that is seen in this grammar pattern is partly due to the function of the first と, and is one of the reasons that になると will not be used to convey a similar meaning. に and と are regularly used in this way in Japanese, with と almost always indicating that the outcome of something is unavoidable, cannot be controlled, is as to be expected. に merely focuses on the transition from (A) to (B).

  • 50(ごじゅう)(だい)となると(からだ)(おも)うように(うご)かなくなる。
    Once you turn 50, your body stops working like how you want it to. (Unavoidable due to age)
  • 50(ごじゅう)(だい)になると(からだ)(おも)うように(うご)かなくなる。
    Once you turn 50, your body stops working like how you want it to. (Simply stating that once you turn 50, your body won't be the same as it was before)

Examples

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    ここは普通(ふつう)漁村(ぎょそん)だが、夏休(なつやす)ともなると大勢(おおぜい)(きゃく)()て、(にぎ)やかになります。

    This is an ordinary fishing village, but when the summer vacation starts, a large number of visitors come and it becomes lively.

    田中(たなか)さんは普通(ふつう)のサラリーマンだが、(あぶ)なくて(あと)()状況(じょうきょう)ともなると獅子(しし)のように()(ひと)(まも)る。

    Tanaka-san is just an ordinary office worker, but when the situation is dangerous and there is no way out, he will protect others like a lion.

    大人(おとな)ともなると幼馴染(おさななじみ)との友情(ゆうじょう)(よわ)くなりつつあるだろう。

    Once you become an adult, the bond with childhood friends gets weaker and weaker.

    チームリーダーに就任(しゅうにん)するともなると自分(じぶん)仕事(しごと)(かぎ)らずチームメンバーの仕事(しごと)責任(せきにん)があるだろう。

    Once you become a team leader, you will be responsible not only for your own but also for the work of team members.

    普段(ふだん)貪欲(どんよく)ではない(ひと)でも、莫大(ばくだい)金額(きんがく)ともなると貪欲(どんよく)になるかもしれない。

    Even people who are generally not greedy might become greedy when it comes to huge amounts of money.

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      ともなると・にもなると – Grammar Discussion

      Most Recent Replies (2 in total)

      • FredKore

        FredKore

        uhh… something’s off here.
        The orange nuance text is nowhere in the grammar page…

      • Mannelito

        Mannelito

        普段は貪欲ではない人でも、莫大な金額 *ともなると * 貪欲になるかもしれない

        Can someone help me understand why ときたら doesn’t work in this sentence or what separates them?

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