leave He's just left on a visit to kunming.这里只能用left left to

leave He's just left on a visit to kunming.这里只能用left left to
leave
He's just left on a visit to kunming.
这里只能用left left to

leave He's just left on a visit to kunming.这里只能用left left to
其实leave 后是不加任何词的...而这里的on是和on a visit一起的.
如果说是一个地名...就是leave for...
例如:He's just left for kunming...
也不能用to.