【题目】假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下短文。文中共有10处错误，每句中最多有两处。每处仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者（从第11处起）不计分。
I’ve just returned back from my spring break after visit my brother America. His school had just finished their break, so I get a chance to pay a visit to it. At the front door which there was a special machine,he had to call a security guard to take me to the main office to get a special pass. Then, dog smelt me by its nose.There were cameras anywhere, except in the bathrooms. I felt like I was a thief. Personally, I don't think a school need to be like a prison. It should be a comfortable place for student to study in happy.
在线课程【答案】
【解析】本文主要介绍了作者去美国的一所学校看望自己哥哥的经历。
考查固定短语。return from从……回来，是固定短语，所以去掉back。
考查固定用法。介词after之后用v+ing形式，所以visit改成visiting。
考查时态。发生在过去的事情，用一般过去时，所以get改成got。
考查定语从句。where there was a special machine是一个定语从句，关系词在从句中作地点状语，所以which改成where。
考查冠词。泛指“一只狗”，且dog的首字母发音是辅音，所以dog之前加a。
考查固定用法。然后一只狗用它的鼻子闻我。表示“用…..”，所以by改成with。
考查语义理解。到处是摄像机，所以anywhere改成everywhere。
考查主谓一致。a school是第三人称单数，所以谓语动词也用单数形式，need改成needs。
考查名词单复数。表示对于学生来说，是复数意义，所以student改成students。
考查副词。修饰动词study，用副词，所以happy改成happily。