たらどうですか
(Tara dou desu ka)
Used to give advice or make a suggestion in a polite way.
Connection rules
- +Verb (た-form) + らどうですか
Examples
1.
少し疲れているようですから、今日は早く帰ったらどうですか。

Sukoshi tsukare te iru you desu kara, kyou ha hayaku kae tara dou desu ka.
You look a bit tired, so why don't you go home early today?
「Caring colleague giving advice.」
2.
分からないことは先生に聞いてみたらどうですか。

Wakara nai koto ha sensei ni kii te mi tara dou desu ka.
Why don't you try asking the teacher about things you don't understand?
「Friend suggesting a solution.」
Practice
If you are worried, why don't you consult with your teacher?
悩んでいるなら、先生に___。
Romaji also accepted