the plane(taking off / to take off)in then minutes,all the passengers on board
题目
the plane(taking off / to take off)in then minutes,all the passengers on board
with the plane(taking off / to take off)in then minutes,all the passengers on board were asked to turn off their mobile phones,
答案
我觉得应该是用to take off,不定式结构表示还未发生,原句的意思是飞机即将起飞,所有的乘客被要求关闭手机.
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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