i just wonder ( ) that makes him so excited.
题目
i just wonder ( ) that makes him so excited.
A what it is
B what is it
C why it does
选A 为什么
答案
A.动词wonder后跟的是一个宾语从句,整个宾语从句是一个强调句,强调的是句子的主语---**;从句部分为it is ** that makes him so excited.如果就**提问的话,应该用what；what is it that makes him so excited.整个句子是宾语从句,所以应用陈述语序,what it is that makes him so excited.
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．
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