Question

12. —What did Jack ask you just now? —He wanted to know how long _________ when I reached the

最后单词是cinema
A. had the film been on B. the film had started
C. the film had lasted D. had the film ended
为什么选c A不行吗？为什么，麻烦解释一下，谢谢啊

Answer 1

这里how long _________ when I reached the是know的宾语，要用陈述句语序，排除AD，然后how long表示要用延续性动词，所以不能用start
刚刚jack问你什么？——我想知道当我到电影院的时候电影持续多长时间了

Answer 2

宾语从句使用陈述句
所以A和D错了，他们是疑问句
last延续动词可以和how long 连用，start不可以

Answer 3

A 项中， had 提前了，这里不是独立问句，而是从句，所以助动词had不能提前到主语film前面。