Ben去开门.如何用英文?

语境，你是说本去开门了这个动态，还是请他去开门这个祈使句？
Ben opens the door/
Ben,please open the door.

ben opens the door
...
其实要看语境
譬如ben'll get it

Ben goes to open the door.

Ben goes to open the door.
Ben opens the door.
Ben is opening the door.

Ben opens the door.
Ben answers the door (有人敲门，Ben应声开门。）

Ben went to open the door.