题目内容：

i don't know which one to choose
which one 是KNOW的宾语还是KNOWN后面宾语从句的主语?
I didn't know which one to choose .
主语 谓语 不定式做宾语
不定式做宾语 ,怎么which one是 choose 的宾语

优质解答

which one to choose是wh- to do 结构,不是从句.1.该结构起名词作用,作主语、宾语、表语、同位语.I didn't know how to choose .2.wh-词如果是副词,如where\when\how等,作to do 的状语；如果是代词,如what\whose 等,...