She heard voices and realized that there___some people in the next room.
题目
She heard voices and realized that there___some people in the next room.
A.had been B.would be C.were beingD.were
答案
主句和从句的事实同时发生,有因果关系,故时态必须一致.都用一般过去时.
全句的意思是:她听到了响声,意识到隔壁房间里有些人.
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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