What it means
もし～たら expresses a condition: if something happens, or in case something happens. もし is often used to clearly mark the condition, while たら attaches to the past form of a verb, adjective, or noun-based expression. The result clause can describe a plan, request, suggestion, or likely outcome. The condition may be real or hypothetical, depending on the context.
Usage note
Do not confuse conditional たら with its use for a sequence of events, such as “when I finished.” もし is optional when the conditional meaning is already clear.
How to use it
もし明日雨が降りましたら、家で本を読みます。
If it rains tomorrow, I will read a book at home.
もし明日雨が降ったら、家で本を読む。
If it rains tomorrow, I will read a book at home.
Example sentences
もし明日雨が降ったら、試合は体育館でします。
If it rains tomorrow, we will hold the game in the gymnasium.
もし駅に着いたら、母に電話してください。
If you arrive at the station, please call your mother.
もし熱が出たら、病院へ行きます。
If I get a fever, I will go to the hospital.
もし財布