语法总结
间接疑问句
asked whether/if the operation had been successful 是宾语从句，疑问词后使用陈述语序。
相似句：
- I asked where he lived.
- She wondered if he was ready.
间接引语中的时态呼应
He asked when Mr. Gilbert would be allowed... 在过去叙述中用 would 表过去将来。
相似句：
- He asked when the train would arrive.
- She wondered whether I would go.