他们正在打篮球 They are playing basketball
他们正在操场打篮球 They are playing basketball playground
他们正在操场上打篮球 They are playing basketball playground
他正在打篮球
He is playing basketball
以上为机器翻译结果，长、整句建议使用 人工翻译 。
昨天的这个时候他正在打篮球。
He was playing basketball at this time yesterday.
youdao
当我看见他的时候，他正在打篮球。
He was playing basketball when I saw him.
刚才我看见他正在打篮球。
I saw him playing basketball just now.
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