méi yǒu / dǎo yóu / tā / jiù / quán chōng / xiàng dǎo / dài / wǒ men / yóu lǎn / le / gǔ chéng

没有导游，他就权充向导，带我们游览了古城。

There was no tour guide, so he temporarily served as our guide and showed us around the ancient city.