The current base Medicare Part B premium is $121.80 per month per person, and a Medigap plan to help cover what Medicare won't can easily cost $250 per month or more,as well.
为什么won't 和 can可以连用?
这里是what引导的什么从句?
The current base Medicare Part B premium is $121.80 per month per person, and a Medigap plan to help ( to 省略)cover what Medicare won't(cover 省略)can easily cost $250 per month or more,as well.
解答:what 引导宾语从句,作不定式to cover 的宾语,can cost 为句子(主句)谓语动词。 $250 为句子宾语,per month为状语
备注(1):plan为名词用法,如果是动词用法,必须使用“三单形式,即plans”所以plan只能名词用法 help后面不定式符号to省略,Medicare为宾语从句主语,won't cover为宾语从句谓语动词,what为宾语从句宾语。what为融合性连接代词引导宾语从句,what=the thing that。
备注(2):plan为名词用法, to help to cover what Medicare wont cover为不定式短语作名词plan后置定语。can cost为句子谓语动词。
a Medigap plan to help ( to 省略)cover what Medicare won't(cover 省略)【主语】//can easily cost【谓语动词】// $250【宾语】// per month【频度状语】//
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