请帮忙分析下这个句子的主谓宾成分How do you think i can improve my writing ability?
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我是英语老师,帮帮你.
you作主语,do 和think 作谓语,I can improve my writing ability作宾语（从句）,how 状语.
======以下答案可供参考======
供参考答案1:
主语 you谓语 think
宾语是个宾语从句 i can improve my writing ability
供参考答案2:
how为主语 do是谓语吧 是宾语 you think i can improve my writing ability
应该是这样吧