Good children
Today we saw a man, and he was a thief. When we saw him, he was stealing a bottle of milk. He then walked to the bus stop and read newspapers there. We followed him all the way there. After a while, a policewoman (或 female cop, 不过这个口头用比较多) came by and asked us what we were doing. We said, "That man there is a thief." So the policewoman and we went ahead to catch (或 arrest) that man.