句子成分划分

But cutting back on sleep means your heart has to work overtime without its allotted break.

请问老师这个句子怎么划分成分？谢谢

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其它 1 个回答

刘永科 - 教育出版集团英语总顾问 & 英语系列图书主编 1秒前

擅长：语法理论,语言学,文化背景

But cutting back on sleep （主语）means （谓语动词）your heart has to work overtime without its allotted break.（宾语从句）

your heart has to work overtime without its allotted break.（副词 + 介词短语，状语）