do sport 還是 do sports?

Do sport/do sports都可以用

sport是運動, 可以是集體名詞(collective noun)统稱所有運動項目,也可以是可數名詞(countable noun)指一種運動。

如果用作集體名詞(collective noun)统稱所有運動項目, 可以寫do sport, 例如:
我通常在週末做運動。I usually do sport in the weekend. (如果指有比賽性質的運動,是可用動詞play代do的: I usually play sport in the weekend.)
上面也可用可數名詞(countable noun)sport的方式來表達,寫成
單數: I usually do a sport in the weekend./I usually play a sport in the weekend.
複數: I usually do some sports in the weekend./I usually play some sports in the weekend.

順帶一提有趣的是,動詞go字也會和運動同用的,那些運動是動名詞ing尾的,例如fishing, dancing, cycling,是寫作 I go fishing/dancing/cycling on holidays.

其實應該是 DO EXCERSISE
不過,
如果DO SPORT還是DO SPORTS,應該是乎單數定眾數,
不過,我估,我估應該是DO SPORTS
唔知對不對...