第1个回答 2008-07-18
Sorry, I am so careless, I just found your reply that you sent to me five days ago.
第2个回答 2008-07-18
I was so careless that I found you had already replied my mail 5 days later.
第3个回答 2008-07-18
I am so careless that I just find your reply five days after you have sent it to me.
第4个回答 2008-07-18
我真是粗心大意,过来五天才发现你已经回复了我的信"
I am so careless that I found that your reply after five days.
第5个回答 2008-07-18
I am so negligence that I didin't noticed your reply until five days later you have sent it to me.(用not until 句型 更能体现出“才”)
希望对你有所帮助^_^