she has made up her mind to go into business when she leaves her college

she has made up her mind to go into business when she leaves her college

题目
she has made up her mind to go into business when she leaves her college
为什么主句用完成时态?
答案
强调影响,说明她现在仍然有这种想法
而过去式也是可以的,不过只是说明了一个动作而已,现在还有没有这个想法我们不知道
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