Do you remember ( ) a.if you bought the dictionary or not b.if did you buy the dictionary
题目
Do you remember ( ) a.if you bought the dictionary or not b.if did you buy the dictionary
c.whether you bought the dictionary or not
d.where did you buy the dictionary
答案
c
从句做remember的宾语 要用陈述句顺序 排斥ac
后面有or not的情况下只能用whether不能用if
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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