英语改错：Once to be begun,the plan will never be changed 哪里错了?
问题描述：
英语改错：Once to be begun,the plan will never be changed 哪里错了?
答
Once begun,the plan will never be changed
去掉 to be
once省略结构
还原为Once it is begun,the plan will never be changed
it指代the plan