问题描述：
and 和 or 的用法
He has no brothers and no sisters.能不能说成：He doesn't have brothers and sisters. "and"用于否定句中能表示全部否定吗?请详细说明.谢谢.
我也觉得不对，可是课本上却明明这样写。I don't have brothers and sisters.可是家里却只有他一个男孩。
He has no brothers and no sisters.能不能说成：He doesn't have brothers and sisters. "and"用于否定句中能表示全部否定吗?请详细说明.谢谢.
我也觉得不对，可是课本上却明明这样写。I don't have brothers and sisters.可是家里却只有他一个男孩。
问题解答：
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