同意好题老师的分析。一般认为,表示事物的一部分时,通常用 of 所有格,而不用-'s构成的所有格。但这不是绝对的,比如《张道真英语语法大全》就对此专门做了一个小结(以下摘录该书的内容):
某人或某动物具有的东西 (如身体的一部分等), 也可指某物的一部分:
John’s face
my father’s legs
the scientist’s brain
the dog’s eyes
goat’s meat
the lion’s heart
He is at his wit’s (or life’s, journey’s) end.
He has English at his fingers’ ends (or tips).
He lives near the town’s end (or the water’s edge, the wood’s edge, the city’s centre, the hill’s foot, the river’s head, the mountain’s top, the river’s mouth, the mountain’s side).
They are at sword’s points.
答案如下:
正:the top of the mountain
误:the mountain's top
正:the mountain top
举例说明:
the top of the mountain
We climbed right to the top of the mountain. 我们一直爬到山顶。
I felt a kind of exhilaration when I reached the top of the mountain. 登上山顶后,我感到异常兴奋。
The trees thinned as we got closer to the top of the mountain. 随着我们慢慢爬上山顶,树木也变得越来越稀少。
the mountain top
Clouds have settled over the mountain tops. 那些云彩在山顶上空停留不散。
The view from the mountain top was most picturesque. 从山顶望去,那风景真是太美了。
We started off so early as to reach the mountain top before sunrise. 我们动身很早,所以在日出前就到达了山顶。
关于the mountain's top 的用法,我补充几句和胡老师不同的理解供参考。the mountain's top的用法应该也是正确的,但不如the mountain top更常见,也有些文体上的差异。请看 William Cobbett 所著的 A Grammar of the English language in a Series of letters. 提到了这一用法:
外刊有不少使用the mountain's top的例句,这里仅提供两个供参考:
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