‘‘电灯上有只玩具熊’’用英语怎么说?主要是‘‘电灯上有只’’

There are only teddy bear on lamp

There are only teddy bear lamp

There is a teddy on the lamp.
On the lamp,there is a teddy.
on the lamp就是‘电灯上’的意思

There is a teddy bear on the electric lamp/light.
electric light这是英语较为直译的说法，一般来说日常用语只用lamp作统称就可以了。