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常見錯誤 Common mistake: a fifty dollars note

A simple but common error is to use a number and the plural form of a noun to form a compound adjective:

We took two weeks holiday. ✗

Let’s take a ten minutes break. ✗

I found fifty dollars note. ✗

These must use the singular forms of the nouns (week, minute, dollar):

We took two-week holiday. ✓

Let’s take ten-minute break. ✓

I found fifty-dollar note. ✓

Note: hyphens (-) are needed.

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