假如你是Bill, 你的好朋友Sam发来电子邮件，请你下周末去他家做客。你下周末没空不能去。请用e-mail回复Sam，并说明不能在下周末拜访他的三条原因，50

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假如你是Bill, 你的好朋友Sam发来电子邮件，请你下周末去他家做客。你下周末没空不能去。请用e-mail回复Sam，并说明不能在下周末拜访他的三条原因，50词左右。(5分)

答案

Dear Sam,
I am very glad you can invite me to your home next weekend. I would like to go but I’m afraid I can’t. First of all, I have a test next Monday, so I have to study for the test. The test is very important because it makes up 30% of the final exam. I must do well in it. Also, I have to finish my homework. What’s more, I have to stay at home helping my mother do some housework. I wish I can go next time.
Bill

解析

试题分析：这篇短文是一个开放式作文。文中为我们安排好了主题，但是主体部分需要我们自己来补充完成，就是你要想出三条拒绝Sam 的理由。通过分析我们可知这篇短文主要用第一人称，一般现在时。注意行文连贯，运用适当的连词。
【亮点说明】这篇短文写得相当不错，文章表达完整，运用了正确的时态和人称，表达也比较流畅。其中写得比较好的句子I would like to go but I’m afraid I can’t、 he test is very important because it makes up 30% of the final exam、 I have to stay at home helping my mother do some housework等，运用的句型很准确，句式较复杂。