Hǎodǎi tā yě shì nǐ de gēge, nǐ yīnggāi zūnzhòng tā.
He's your older brother after all; you should respect him.
Tips
usage
好歹 has two main uses: (1) as an adverb meaning 'at any rate / after all / at least' (most common in speech), and (2) as a noun meaning 'good and bad' or 'what might happen' (as in 万一有个好歹, 'if something bad were to happen').
