She and her family hid away for nearly twenty-five months before they were discovered.
题目
She and her family hid away for nearly twenty-five months before they were discovered.
（1）before引导的是（）句子,译成（）
（2）举例：我还没来得及上车,车就开走了____________
答案
（1）before引导的是（时间状语）句子,译成（在.之前,本题翻译为：在他们被发现之前）
（2）举例：我还没来得及上车,车就开走了：The bus had left before I could get on.
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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