地點名詞什麼情況下加the

特指時加the，例如:the forbidden city，紫禁城，the great Wall，長城，the summer palace頤和園，例句如下:l visit the summer palace once a year.我每年去一次頤和園。

she never visits the great Wall.她從沒去過長城。

there is the forbidden city in Beijing.