-- what did yang ying say -- she said they --- a school trip the next weekenda\ will haveb\ hadc\ would haved\ have请您说明理由好吗?

-- what did yang ying say -- she said they --- a school trip the next weekenda\ will haveb\ hadc\ would haved\ have请您说明理由好吗?
-- what did yang ying say -- she said they --- a school trip the next weekend
a\ will have
b\ had
c\ would have
d\ have
请您说明理由好吗?

-- what did yang ying say -- she said they --- a school trip the next weekenda\ will haveb\ hadc\ would haved\ have请您说明理由好吗?
C 杨颖说了什么?她说他们下周有学校旅行
问句用了一般过去,答句是过去完成时
过去完成时：sb said+过去完成时,引导的宾语从句.
因为时间是过去的下一周,所以是将来时,变成过去就是过去将来时would+过去分词
还有过去完成时的一般形式是sb+had+过去分词表示过去的过去,上面的说法是比较难的
重点就是said后的宾语从句时态一定要变成过去（往前推一个时间）

C，过去将来时。在过去谈论将来的事，或者理解为一般将来时的过去时