短文改错
文中共有10处语言错误。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。
A lecture on “English learning” was held on an afternoon of last Friday in our school. The lecture giving by a professor from Peking University lasts from 2:00 to 4:00. He stressed serious the importance of learning English in modern times. Then he shared their learning experience with us. Besides, he introduced some useful ways memorize English words or improve our spoken English. After the interested lecture, we asked him for advices on some problems we had while learning English. We have been learned a lot from this lecture