他知道他功课
He knows his lessons
以上为机器翻译结果，长、整句建议使用 人工翻译 。
他当然应该再复习一遍功课，但你知道，他做不到。
He ought, to be sure, to have read over his lesson again, but that, you know, he could not do.
youdao
他或是知道他的功课，或是不知道。
He knows his lesson, or he does not know it.
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