文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加，删除或修改。
增加：在缺词处加一个漏词符号(∧)，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．每处错误及其修改均仅限一词;
2．只允许修改l0处，多者(从第11处起)不计分。
When I was fifteen years old, I went to Hangzhou with two American．I became their guide．First, we went to the West Lake．They wanted to look around the lake by the boat．After buy the tickets, we got into a boat．We went around seeing the beautiful sight．After that, we went shopping．The sellers couldn't spoke English．Though it was very harder, I tried my best listen to their words carefully and translate the sentences．They bought some little things with their help．Next, we went to a small zoo but took some pictures．When we felt hunger, we went out and had lunch．After lunch, we visited some old house and learned more about Chinese history．