用 seen 造句. 英语: I've seen such a thing for long time. He has seen such a great change since then. 1. 10KB She slipped away without being seen. 她悄悄地溜掉了, 没人看见。 2. I have seen him before. 我以前曾经见到过他。 3. He passed me by as though he had never in his life seen me before. 他不理我,好像在他的生活中他以前从未见过我似的。