Jack _____(leave) until his teacher comes back.why?
题目
Jack _____(leave) until his teacher comes back.why?
答案
我觉得该用将来时!因为until后面可以理解为是主将从现..前面也要用将来时语态才对.
意思楼上说的很对.
will not leave
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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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