用英语怎么表示“两个半小时”、“半个小时”和“五分之三个小时”?

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用英语怎么表示“两个半小时”、“半个小时”和“五分之三个小时”?
用英语怎么表示“两个半小时”、“半个小时”和“五分之三个小时”?

用英语怎么表示“两个半小时”、“半个小时”和“五分之三个小时”?
two hours and a half.
half an hour.
three fifths of an hour.

two hours and a half 或者 two and a half hours
half an hour
three fifth of an hour

two hours and a half
half hour
Fifth of three hours