文中共有10处错误，每句中最多两处.错误涉及一个单词的增加、删除或修改。
增加：在此处加一个漏词符号（∧），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. 每处错误及修改均仅限一词；
2. 只允许修改10处，多者（从11处起）不计分。
Once I had to read a text-book which was so expensive for me to buy it. I couldn’t obtain it from the library and an only copy I could find was in a certain bookshop. So I will go along to the shop every afternoon and read a little of the book in a time. One day, therefore, I was disappointed to find the book missing from its usually place. He was about to leave when the owner of the shop waved at me. Expecting to be told off, I went towards him. To my surprise, the owner pointed to the book which placed in a corner. “I put it there in case it should be bought.” He said kindly, left me to continue my reading.
小题1:so-- too
小题2:it去掉
小题3:an – the
小题4:will—would
小题5:in -- at
小题6:therefore—however
小题8:usually—usual
小题7:He—I
小题9:去掉which或which后加was
小题10:left前加and或left—leaving
题目分析：
小题1:副词用法错误。本题考查too … to …结构，表示“太…….而不能”。
小题2:关系代词用法错误。本句是定语从句，故把it去掉。
小题3:冠词用法错误。这里是特指，故用定冠词the。
小题4:时态用法错误。根据句中的时态可知用一般过去时态。
小题5:介词用法错误。这里用at a time表示“一次，每次”。
小题6:副词用法错误。根据句意可知，前后为转折关系，故用however。
小题7:词性用法错误。名词前应当用形容词修饰。
小题8:代词用法错误。根据全文可知，此处用第一人称。
小题9:句子结构用法错误。定语从句谓语应当用被动语态。
小题10:句子结构用法错误。句中缺少连词，或用现在分词形式。