Must I be here tomorrow? I asked him.
Must I be here tomorrow? I asked him.
合并成一句. I asked him _____ I must be here tomorrow.
那里为什么要填if?
还有一句: "Have you bought the ticket?" asked the conductor.
同义转换成 The conductor asked me ____ I ______bought the ticket.
为什么那里填 if 和 had?
请详细点.或者说明要看哪方面的语法知识! 谢谢~
就是为什么不用whether 呀?