～たら
If or when this happens, then...
You'll be able to describe a result that depends on a condition or follows after it is completed.
キャンプ場に着いたら、テントを立てましょう。
kyanpujou ni tsuitara, tento o tatemashou.
What do you think this sentence means?
When we arrive at the campsite, let's pitch the tent.
Respond when a condition is met
～たら is a flexible way to say if or when. The result follows the condition being met, and can be a plan, request, or suggestion. It can also describe discovering something after an action.
駅に着いたら、電話してください。
eki ni tsuitara, denwa shite kudasai.
Please call when you reach the station.
Form and use ～たら
Use 行ったら, 安かったら, 静かだったら, and 雨だったら. Negative verbs use なかったら. The past-shaped form does not make a future condition past.
駅に着いたら、電話してください。
eki ni tsuitara, denwa shite kudasai.
Please call when you reach the station.
安かったら、買います。
yasukattara, kaimasu.
If it is inexpensive, I will buy it.
店に行ったら、休みでした。
mise ni ittara, yasumi deshita.
When I went to the shop, I found it was closed.
仕事が早く終わったら、飲みに行きませんか。
shigoto ga hayaku owattara, nomi ni ikimasen ka.
If work finishes early, would you like to go for a drink?
雨が降ったら、試合は中止です。
ame ga futtara, shiai wa chuushi desu.
If it rains, the match will be canceled.
もし時間があったら、手伝ってください。
moshi jikan ga attara, tetsudatte kudasai.
If you have time, please give me a hand.
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