cost of....but not of....平行 for which表示原因
pay for...........
句首不用which修饰 距离修饰词太远,后面用for which指代更清楚
这里的“获益人支出20%”指的是那些nonhospital services
but 连接两句话
cost of ...but not of 要保持平行
要保留原句的强烈语气 must
beneficiaries must pay for the other nonhospital services...修饰很准确
从but not of可知后面一句是与前面的of home health care做对比,所以可以排除DE两项
beneficiaries must pay 20 of the costs for the services
注意情态动词MUST不能随意省略
cost of, but not of ……句子结构。要保持must之意。
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