we have learned English (for)six years.括号中为什么填for

we have learned English (for)six years.括号中为什么填for 改写句子 I have learned English for six years.It is six years __ we have learned english for 2 years?同义句! We have learned English for more than three years.We have le We have learned English for nearly two years 对for nearly two I have learned English for ten years中的learned为什么加ED 英语翻译We have learned English for two years.（改为同义句）Two years _ we will have learned english for 10 years by the time we gra we will have learned english for 10 years by the time we wil Though we have learned english for two years,we can't commun we have learned english for (n ) five years根据首字母提示,完成句子. We have learned English for about sueen years（改为被动语态）