改错 -He requestd that we must offer some money to him
题目
改错 -He requestd that we must offer some money to him
改错1.-He requestd that we must offer some money to him
2.-I hear John refused to tell the truth and was taken away by the police.-- Where did you put that up?
3 .I have explained the question twice,however he is still puzzled.
答案
1.must去掉或者改成should.因为这句是虚拟语气,谓语形式用（should）+do.
2.没看懂
3.however 改成 but
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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