He know a lot about China可不可以换成He knows a lot of China

问题描述:

He know a lot about China可不可以换成He knows a lot of China

不可以,a lot of China意为许多中国,a lot about China 意为关于中国的许多,两者不可互换
a lot of 后面也不能加about,两个介词是不能并用的