For some situations we make inversion just for emphasis ,it is not a must
We have never wittnessed such cruel behaviour by one child for another
Never have we wittnessed such cruel behaviour by one child to another.(For emphasis , it is not a must)
However I am not sure about the following sentences whether inversion is a must or is made just for emphasis.
*What about the inversion ''there'' and ''verb''?
a1)I opened the door and there stood Michael , all covered in mud
a2)I opened the door and Michael stood there , all covered in mud
b1)She looked out and there was Pamela, walking along arm in arm with Goldie.
b2)She looked out and Pamela was there , walking along arm in arm with Goldie.
Are there any differences between a1-a2 , b1-b2?