Underthetree

问题详情：

 Under the tree _____ of about ten, who was waiting for his mother to come back.   

   A. a boy sat         B. did a boy sit   C. sat a boy        D. a boy did sit

【回答】

 C。作地点状语的介词短语置于句首时，句子常用完全倒装形式。句意：在树下坐着一个大约10岁的男孩。他在等他妈妈回来。

知识点：倒装与省略

题型：选择题