题目：
下文中共有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
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．每句不超过两个错误；
2．每处错误及其修改均仅限一词；
3．只允许修改10处，多者（从第11处起）不计分。
Three weeks ago I bought the electronic dictionary at a shop. But I hadn't used it for several day while I found it didn't work. So I went to the shop, but only to be told that the problem could not be solved unless it was sent back the factory where it was made .Then I did as I was told without any delay. Unfortunately, the factory promised to repair the dictionary and sent it back in a week. Two weeks has past, but I haven't yet received one. l have no idea ,why things are like this. I'm looking forward to receive my dictionary as soon as possible.
答案：
小题1:the → an
小题2:day → days
小题3:while → when / before
小题4:去掉but
小题5:加上to
小题6:Unfortunately → Fortunately
小题7:sent → send
小题8:past → passed
小题9:one → it
小题10:receive → receiving
题目分析：
小题1:Three weeks ago I bought the electronic dictionary at a shop. 改为an。三周前买了一个电子词典。“电子词典”是泛指，应该使用不定冠词。
小题2:But I hadn't used it for several day… 改为days。several：几个，后接名词复数。
小题3:But I hadn't used it for several days while I found it didn't work. 改为when或before。题意：我还没用几天，词典就坏了。had (not) done sth. before / when …是固定句式，意为“刚……就 ……”。
小题4:So I went to the shop, but only to be told… 去掉but。作者回到购买电子词典的商店，只是被告知必须将电子词典寄回原产厂家才能解决问题。only to do sth.表示“意外的结果”。
小题5:…the problem could not be solved unless it was sent back ∧ the factory where it was made.加上to。send sth. back to sb.将某物送/寄还某人。
小题6:Unfortunately, the factory promised to repair the dictionary… 改为Fortunately。所幸工厂答应修理。
小题7:…promised to repair the dictionary and sent it back in a week. 改为send。promise后接to repair …和to send…两个不定式做宾语。
小题8:Two weeks has past, … 改为passed。 passed为动词过去分词，与has构成现在完成时；past是介词。
小题9:… but I haven't yet received one. 改为it。it指送修的电子词典，是同一指代；one是同类指代，即同样的事物，而非同一个事物。
小题10:I'm looking forward to receive my dictionary as soon as possible. 改为receiving。look forward to (doing) sth. 期待（做）某事，to是介词。
