难道你不知道这个消息吗?
nándào nǐ bùzhīdào zhègè xiāoxī ma ?
Don't tell me you don't know this news?
难道他真的会来吗?
nándào tā zhēnde huì lái ma ?
Could it be that he will really come?
难道你不想去旅行吗?
nándào nǐ bùxiǎng qù lǚxíng ma ?
Don't tell me you don't want to travel?