もしも～なら

If, Supposing

Structure

もしも + Phrase［なら］⁽¹⁾

⁽¹⁾ Phrase［ば］、Phrase［と］、Phrase［ても］

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About もしも～なら・もしも～でも

もしも is an adverb in Japanese that strengthens the base meaning of もし 'a bit'. Therefore, the literal meaning of もしも is 'even a bit'. Despite this, as もし and もしも are almost exclusively paired with sentences that use some sort of assumption, or 'hypothesis' based expression, もしも will often be translated as 'supposing that'.
もしも will be used at the beginning of sentences that include almost any form of hypothesis expression. For example, ば, と, なら, or ても.

もしも、今年(ことし)中(じゅう)に引(ひ)っ越(こ)すのならば、僕(ぼく)が手伝(てつだ)ってやるよ。
Supposing that you move within this year, I will help you.
もしも仕事(しごと)で怪我(けが)をすると、現場(げんば)が止(と)まるので気(き)をつけてください。
Supposing that you get hurt at work, the site will be shut down, so please be careful.
もしも明日(あした)休(やす)みなら、一緒(いっしょ)に博物館(はくぶつかん)へいかない？
Assuming you have a day off tomorrow, do you want to go to the museum with me?
もしも彼(かれ)がいたとしても、今日(きょう)中(じゅう)には終(お)わらなかっただろう。
Supposing he were even here, don't you think we would not have been able to complete it by today?

Although もしも is considered a stand-alone adverb, it is just a combination of もし, and the adverbial particle も.

Caution

もし and もしも are most often used to express some type of result. This means that (B) will happen if (A) happens, or if (A) is true. However, たとえ is contrastive, and therefore asks 'what the result' of a specific situation may be.

もし、また宿題(しゅくだい)を忘(わす)れたら親(おや)に電話(でんわ)をします。
Assuming you forget your homework again, I will call your parents. (Calling their parents will be the result of forgetting their homework)
たとえ、テストが難(むずか)しくても最後(さいご)まで諦(あきら)めないで頑張(がんば)ってください。
If, for example, the test is hard, don't give up, and do your best until the very end. (If the test is difficult, doing your best is not a result, just one of many choices that could be made)

Synonyms

Examples

もしもドラえもんがいたなら、助(たす)けてもらえるのに。
If Doraemon were here, he would help us.
ドラえもん is a name of a cat-shaped robot, which can solve any problem from the anime of the same name.
もしも僕(ぼく)がドラえもんでも助(たす)けられない。
Even if I were Doraemon I would be unable to help.
もしも戦(たたか)うなら囲碁(いご)がいい。
If we are going to battle, I say we settle it with a game of Go.
もしもこの計画(けいかく)が実現(じつげん)したなら、この街(まち)はもっと住(す)みやすくなるでしょう。
If the plan becomes a reality, this town will become much easier to live in.
シリクス：「もしも生(う)まれ変(か)わるなら、その時(とき)も僕(ぼく)と結婚(けっこん)してくれる？」
Sirix: 'If you were reborn, would you marry me again?'
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- Analyzing song lyrics with もしも
  Word Reference Forum
- Why does ドラえもん contain both Hiragana and Katakana?
  The Japanese Man Yuta

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もしも～なら・もしも～でも – Grammar Discussion

Most Recent Replies (5 in total)

FredKore
It’s a paid site for vocabulary…
Japanese Core 6000 > Japanese Core 4000 > Japanese Core 4000: Step 6 - iKnow!
Munzu
I haven’t quite understood the difference between もし and もしも. Can anybody please explain?
Pablunpro

もしもこのレソースは「もしも」という文法についてだったら、…

待って！なるほど…今分かったよね！