Originally posted by Hippo
Thank you for your reply.
I see your point and I understand difference between those too constructions(At least I think I understand ;-)) , but I still insist that they are both possible in this case. I can try to ground my opinion.
I see the structure of the sentence in this case like:
subject: Neil Armstrong(noun)
adjective: the first
complex object: man walking on the moon(noun + participle construction)
Second, I know that present participle("walking") in adjective construction "walking on the moon" is used when one need to stress that that action takes place simultaniously with the time pointed out by the main verb (was). So this is ok in this sentence.
A few examples of object participle construction:
He saw the police struggling with the crowd.
Look at a star in the East and you will find it rising upward.