简单句偏多了;文中词汇多样性稍有欠缺,单词拼写也要更仔细;层次不清晰,几乎没有使用衔接词。
Dear john I am very gald you can invite me to your home for dinner.I wuold like to.Because i think your family are pretty friendly and i feel happy together with you .But i have a very important thing to do .My exam is coming the day after tomorrow. I will revise for it .I want to get good grades in the exam .So i can't have dinner with you .I do regret. i hope you will have a good time .If it is convinent of you someday ,i will invite you to my home. Best wishes yours LiHua