てやってくれないか
(Te ya te kure nai ka)
Used when asking someone to do something for a third party of lower status or family members.
Connection rules
- +Verb (te-form) + やってくれないか
Examples
1.
弟の宿題を見てやってくれないか。

Otouto no shukudai wo mi te ya te kure nai ka.
Could you please look over my younger brother's homework?
「Big brother asking favors」
2.
迷子の犬を助けてやってくれないか。

Maigo no inu wo tasuke te ya te kure nai ka.
Could you help out this lost dog?
「Requesting kindness for animals」
Practice
Could you please take the dog for a walk?
犬を___。
Romaji also accepted