The wall is ten-feet high.
It is a ten-foot high wall.
Is there any grammatical explanation why the adjective "high" is modified by the plural noun when being a predicate complement and the singular one when in the noun phrase?
anonymous The wall is ten-feet high. It is a ten-foot high wall. Here is the difference.
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anonymous
The wall is ten-feet high.
It is a ten-foot high wall.
Here is the difference. # 1 with the hyphen [ten-feet] is a compound modifier (adjective), so it is correct.
# 2 is a declarative case, but the correct form is "It is a ten feet wall",no hyphen needed.
It is much like " This is a 6-bedroom house" (compound mod).
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