Are the shoes________ you bought yesterday?

1个回答

  • 原陈述句是what you bought yesterday are the shoes是一个主语从句,或理解为表语从句the shoes are what you bought yesterday.既做are的表语,又做bought的宾语.提问时将are提前.意为:这是你昨天买的那双鞋吗 不能用which,因which不能引导主语从句.如将which在疑问句中看做定语从句的引导词.也说不通,只能用what.