〜たらどう
〜たらどう means why don't you; how about. It is a JLPT N4 grammar point. Attach どう to the tara-form to make a light suggestion or give advice. It is common among close people, and depending on tone it can sound like direct advice.
Japanese sources describe it as 「したらどう」.
〜たらどう examples
分からないなら、先生に聞いたらどう。
If you do not understand, why don't you ask the teacher?
疲れたなら、少し休んだらどう。
If you are tired, why don't you rest a little?
〜たらどう exercises
Pick what belongs in the parentheses. The answer is marked below.
寒いなら、窓を閉め（ ）。
- たらどう ✓
- なければならない
- ない方がいい
- てある
If you are cold, why don't you close the window?
道が分からないなら、駅で聞い（ ）。
- ておく
- たらどう ✓
- なさい
- ないといけない
If you do not know the way, why don't you ask at the station?
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