tā / kàn / zài / hé / fù / qīn / de / lǎo / jiāo / qing / shàng / dā / ying / bāng / wǒ / yí / cì

他看在和父亲的老交情上，答应帮我一次。

Because of his long-standing friendship with my father, he agreed to help me once.