倒装用法There seems to be many people on the square.这句话有错吗,为什么?那

没有错误.这是一个There be 的句型,在be 之前加了seems, 因此,be 就变成了to be.
There are many people.There seems to be many people...
再问： 那seem的单复数不是看many people的,是不是There seems to be 是固定搭配啊?那用seems是因为there吗?
再答： 哦，你是对的，应该用seem，因为主语是many people.