请问老师，seem to后可以接被动语态吗？以下两个句子正确吗？

（1）The problem seems to have been solved.

（2）She was amazed by my progress, which seemed to have been made overnight.

另外请教老师，以上两个句子正确的话，seem 后可以把to have done换成to do吗？具体该如何理解？

（3）The problem seems to be solved.

（4）She was amazed by my progress, which seemed to be made overnight.

请问3、4两个句子正确吗？这时不定式动作是在谓语动词seem后发生还是同时发生？两个句子如何理解和翻译？