which one 算疑问词么

which

one可以是疑问词组,其后句子的其他成分,原则上其后的动词为谓语动词,不是非谓语动词,to

do结构是非谓语动词的一种形式,因此,当which

one为疑问词时,不能用which

one

to

choose搭配,

只能是:which

one

can

we

choose

但wh-

to

do结构可以在句子中作宾语,这时which

one是连接词组,不是疑问词组:如,I

don't

know

which

one

to

choose.