yé / ye / gòu / bù / zháo / hòu / bèi / zhǐ / hǎo / ràng / wǒ / bāng / tā / sāo / bèi

爷爷够不着后背，只好让我帮他搔背。

Grandpa can't reach his back, so he has to ask me to scratch it for him.