我弟弟已经参观过中国南方的一些城市了的翻译：My brother have toured some cities in southern China 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

My brother has visited a number of cities in southern China

My brother have toured some cities in southern China

My younger brother has already visited south China's some cities

My brother has already been visited by a number of cities in the south of China

My brother have toured some cities in southern China