请帮我看看以下句子有什么语法错误

题目

请帮我看看以下句子有什么语法错误
1.I have become a teacher for nine years.
2.He has gone to Shanghai for five minutes.
3.He has fallen asleep for two hours.
4.They have borrowed it for a week.
5.I have bought a pen for two hours.

答案

保证准确率!1.become 改成 beenbecome不能延续一段时间nine years2.gone 改成 been on the/his waygo to不能延续3.fallen 改成 beenfall asleep 不能延续4.borrowed 改成 keptborrow不能延续5.bought 改成 hadbuy不...