for表目的,后面的句子是表自己的目的,意思是：为了干什么of是“.的.”后接宾语从句.eg：I bought a beautiful flower for my mom.我为我妈妈买了一束花,bought是buy的过去式.eg：This is a beautiful flower of Carn... for表目的,后面的句子是表自己的目的,意思是：为了干什么of是“.的.”后接宾语从句.eg：I bought a beautiful flower for my mom.我为我妈妈买了一束花,bought是buy的过去式.eg：This is a beautiful flower of Carn...