It's good to do morning 空 (exercise).用所给词的正确形式填空.(说明理由)

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It's good to do morning 空 (exercise).用所给词的正确形式填空.(说明理由)
It's good to do morning 空 (exercise).
用所给词的正确形式填空.(说明理由)

It's good to do morning 空 (exercise).用所给词的正确形式填空.(说明理由)
exercises (exercise表示“运动”时,是不可数名词,表示“体操”、“练习”时是可数名词).请比较:
He does exercise(做运动)every morning.
She often does morning exercises(做做操) every morning.

你好,正确答案是exercises
理由:exercise这个词,既有“锻炼”的意思,又有“习题”的意思,若是“锻炼”,则为可数,若为“习题”,则不可数。

填 exercises 吧?
我见过 eye exercises 眼保健操


供参考

填exercises

exercise是指任意的运动、锻炼

exercises是指一节一节,可以数的操,比如眼保健操 eye exercises

其中morning exercises 又是固定搭配,意为早操。

所以应该填 exercises

exercises
morning exercises 早操的意思