もしも戦（たたか）うなら囲碁（いご）がいい。

もしも僕（ぼく）がドラえもんでも助（たす）けられない。

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。

もしもこれが現実（げんじつ）でも、受（う）け入（い）れられると思（おも）います。

もしもこの店（みせ）がなくなっても、一生（いっしょう）忘（わす）れません。

もしも私（わたし）が君（きみ）の立場（たちば）でも、同（おな）じことをしたでしょう。

もしもドラえもんがいたなら、助（たす）けてもらえるのに。

もしも可能（かのう）なら、僕（ぼく）も仲間（なかま）に入（はい）りたい。

もしも明日（あした）雨（あめ）なら、遠足（えんそく）は延期（えんき）になります。

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？」

セレナ：「もしも願（ねが）いが叶（かな）うなら、もう一度（いちど）だけ君（きみ）に会（あ）いたい。」

もしも子供（こども）がいなくても、僕（ぼく）はたぶん幸（しあわ）せだよ。

Why does ドラえもん contain both Hiragana and Katakana?

<div class='writeup-body'>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.<ul class='writeup-examples--holder'><li class='writeup-example'><div class='writeup-example--japanese'>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。</div><div class='writeup-example--english'>Supposing that you move within this year, I will help you.</div></li><li class='writeup-example'><div class='writeup-example--japanese'>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。</div><div class='writeup-example--english'>Supposing that you get hurt at work, the site will be shut down, so please be careful.</div></li><li class='writeup-example'><div class='writeup-example--japanese'>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？</div><div class='writeup-example--english'>Assuming you have a day off tomorrow, do you want to go to the museum with me?</div></li><li class='writeup-example'><div class='writeup-example--japanese'>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。</div><div class='writeup-example--english'>Supposing he even were here, don't you think we would not have been able to complete it by today?</div></li></ul> Although もしも is considered a stand-alone adverb, it is just a combination of もし, and the adverbial particle も.<div class='writeup-caution'><div class='caution-header'>Caution</div>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.<ul class='writeup-examples--holder'><li class='writeup-example'><div class='writeup-example--japanese'>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。</div><div class='writeup-example--english'>Assuming you forget your homework again, I will call your parents. (Calling their parents will be the result of forgetting their homework)</div></li><li class='writeup-example'><div class='writeup-example--japanese'>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。</div><div class='writeup-example--english'>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)</div></li></ul></div></div>

Grammar Info

もしも～なら

if, supposing