假定英语课上老师要求同桌之间交换修改短文，请你修改你同桌写的以下作文。文中共有 10处语言错误，每句中最多有两处。每处错误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（八），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：在错的词下画一横线，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。
We are so happy to have Ms Green here to stay with us today. Now I'll make a brief introduce about her. During the period of 1990 and 1996, she studied at Chicago University in America, learn English and the Chinese language. After graduation, she comes to China and has been teaching English in middle schools.
Ms Green will teach us English for a few year in our school. While stay here, she will help improve your spoken English. Beside, she will tell us more about the education in Canada.
I hope Ms Green will have good time in our school.
