分类：教育/科学-外语学习
问题：一道英语题大家好，我有道英语题目不会，大家帮帮我吧WhenItr 
大家好，我有道题目不会，大家帮帮我吧When I try to understand___that prevents so manyAmericans from being as one might expect,it seems to me that there are two causes.A why it does  B what it does C what it isD why it is解题理由尽量写全点，谢谢了
回答：C. 从横线部分到on might expect都是动词understand的宾语，这里是宾语从句，该宾语从句是一个强调句的特殊疑问句型，应用陈述语序。强调句句型：It is/was+被强调的成分+that/who ...
其特殊疑问句的句型是：疑问词+is/was it that...
改为陈述语序则是：疑问词+it is/was that...