I can't decide which one to buy. 谁帮我分析一下句子结构

Question

如题所述

Answer 1

I是主语，decide谓语动词，后面的 which one to buy作动词decide的宾语，是宾语从句。which one to buy 意为“买其中的哪一个”。

Answer 2

I（主语） can't decide （谓语）which one to buy（带疑问词的不定式短语作宾语）

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Answer 3

主语i
情态动词否定can't
动词decide
宾语which one
介词短语做定语to buy修饰one本回答被提问者采纳

Answer 4

I 主语
can't decide谓语
which one英语
to buy不定式后置，做定语，修饰one