你好！谢谢你回答我的中文问题！因为我是美国人，所以我要教你美国人正常的说法，好吗？：）））

你写了："Time is so fast ,and I began to prepare with my midsemester."

应该改为： "Time is going by so fast, and I have begun to prepare for my mid-term exams."

你写了："I don't know if because the exam , but my conditions are not good recently."

应该改为：“I don't know if it is because of the exam, but I haven't been doing very well recently. 

你写了：“I feel I am under a lot of presssure. （这句句子很地道！）

你写了：“I went to work out for several hours incessant for make my body tired and strain. I thought that would make me to drop my dream easier. Nevertheless it does not work. I still can not sleep last night.“

应该改为：“I went to work out for several hours, exercising my body to exhaustion, so that I might get to sleep much easier at night. Nevertheless, it does not work. I still could not sleep last night. 

你写了：“I called my friend,and asked for drinking together. We have drunk all night.“

应该改为： "I called my friend, and asked her to drink with me. We drunk all night."

你写了：“Now I have feel better .We have talked a lot .Like our tomorrow ,our life ,our dream ,our ex-boyfriend,and eve our future husband.“

应该改为：“Now I feel better. We talked a lot. We talked about our dreams, our lives, our ex-boyfriends, and even our future husbands."

你写了：“I think We learn from past,experience thepreaent ,and hope future.“

应该改为：“I think we have learned from the past. We try to live each day to the fullest, and have high hopes for the future."

祝你幸福！继续加油！：）））