一道英语选择题（3.12）I try to understand ____ that prevents so many Chinese from being as happy as one might expect.A why is itB what is itC why it isD what it is 这个句子如何翻译,讲一下思路,另请分析一下这个句子的语法结构.怎么翻译这句话？
问题描述：
一道英语选择题（3.12）
I try to understand ____ that prevents so many Chinese from being as happy as one might expect.
A why is it
B what is it
C why it is
D what it is
这个句子如何翻译,讲一下思路,另请分析一下这个句子的语法结构.
怎么翻译这句话？
答
D 这是一个复合句
understand后跟一个宾语从句what it is 因为是从句所以用陈述语气
后面又有一个定语从句 修饰前一个宾语what...
答
D what it is
it is...that...这是强调句式，强调what,是什么原因
去掉it is...that...意思不变
答
不用翻译
还原结构
what is it that prevents so many Chinese from being as happy as one might expect?
如果用why,结构就不完整
因为这句话呢,是做宾语从句,所以it提前,这句话确实是一个强调句