1.可以,因为“indoors and outdoors”是状语,“by us”也是状语,Basketball can be played by us indoors and outdoors.也是可以的；
2.indoors和outdoors也可以倒过来,除非你的上下文有的意思有明确规定.
we can play basketball indoors and outdoors（改为被动语态）
改为Basketball can be played indoors and outdoors by us
这个indoors and outdoors的位置有讲究吗?可以到us后面吗?
1.可以,因为“indoors and outdoors”是状语,“by us”也是状语,Basketball can be played by us indoors and outdoors.也是可以的；
2.indoors和outdoors也可以倒过来,除非你的上下文有的意思有明确规定.