怎么确定什么时候用 yourself 或者 yourselves 。例如：

The old city centre is small,  which makes it very easy to explore on foot. A river neatly divides the town, not only physically but in spirit too. On one side, you find many grand houses, but on crossing the river, you find yourself in ancient Chinatown, where you really take a step back into the past. 

这里的答案给的是只有yourself，但是我觉得yourselves也完全是可以的，因为前面的 you 并没有确定单指你还是指你们，不知道这样的理解对不对 。