完成一个英语句子

答案如下：
Betty won a prize that she had participated in a competition for students on story writing in Chinese .

第一个老兄回答错了。
betty won a prize that is acknowledged by many authorithies in mathmatics.
这句话是定语从句，不是同位语从句。

同位语从句中的that 在句中不充当任何成分。很明显，在这个句中，that 充当了主语。

可以跟同位语从句的名词通常有news，idea，fact，promise，question，doubt，thought，hope，message，suggestion，words（消息），possibility等。
而这些名词都被称为先行词。该句中的先行词是prize。
先行词要与后面的同位语从句挂钩，也就是两者意思一样。

如：
I can’t stand the terrible noise ____ she is crying loudly.
A.it B.which C.this D.that
析：答案为D.she is crying loudly是the terrible noise的内容，且the terrible noise不在从句中作成分，所以该句为同位语从句。

而下面这句是定语从句：
She heard a terrible noise，____ brought her heart into her mouth.（MET91）
A.it B.which C.this D.that
析：答案为B.分析语境含义、句子结构和句子成分可知，该句为非限制性定语从句，先行词为a terrible noise，且它在从句中作主语。

betty won a prize that is acknowledged by many authorithies in mathmatics.

bet