直到史密斯先生到中国以后,他才知道中国是个怎样的国家.翻译

Mr Smith didn't know what China looks like until he came here.

其他的都还可以，一楼的大哥写错了啊。
宾语从句要用称述语序（即正常语序）才对
Mr.Smith did not know what China is until he came to China.
这当然只是从语法角度考虑。
用what China is 也不好。
千万不能误人子弟啊~
比杀人还可怕的。
二楼的也是。

Mr.Smith did not know what kind of country China is until he came to China.

Mr.Smith did not know what is China until he came to China.

Until Mr Smith arrived in China,did he know what a country China is.

Only until Mr. Smith arrived China did he know what kind of country China really is.