What it means
なら presents a condition based on a topic or assumption, often meaning “if that is the case” or “in the case of.” It attaches directly to nouns and な-adjectives, and it follows the plain form of verbs and い-adjectives. The result clause may be familiar or polite, so なら itself does not need to change when the overall sentence becomes polite.
Usage note
なら can also mark a topic or contrast, so its exact meaning depends on context; these uses are related rather than completely separate functions. でしたら and のでしたら should not be treated as simple polite replacements for なら, because they also add the explanatory or polite nuance of です and のです.
How to use it
学生なら、図書館で勉強します。
If someone is a student, they study in the library.
図書館が静かなら、学生たちはここで本を読みます。
If the library is quiet, the students read a book here.
道が近いなら、私たちは歩きます。
If the road is close, we walk.
雨が降るなら、試合を中止します。
If it rains, we cancel the match.
学生なら、図書館で勉強する。
If someone is a student, they study in the library.
図書館が静かなら、学生たちはここで本を読む。
If the library is quiet, the students read a book here.
道が近いなら、私たちは歩く。
If the road is close, we walk.
雨が降るなら、試合を中止する。
If it rains, we cancel the match.
Example sentences
春なら、この公園で桜が見られます。
If it is spring, you can see cherry blossoms in this park.
電車で行くなら、駅の近くで昼ご飯を買いましょう。
If we are going by train, let's buy lunch near the station.
雨なら、図書館で宿題をします。
If it is raining, I will do my homework at the library.