第1个回答 2012-12-21
Maybe I left my dictionary at home, I am not sure.
表示一种可能,实际上更像是个人心理活动。
第2个回答 2012-12-21
Is that i had left my dictionnary at home?
第3个回答 2012-12-21
Have I left my dictionary at home?
第4个回答 2012-12-21
I will put my dictionary at home?