Question

The most interesting thing to the small boy was _______ he got close to the door, it would open of itself.

A．that as

B．that that

C．what that

D．what when

Answer 1

A

试题分析：句意：对于小男孩最有趣的事情是当他走近门的时候，门自动开了。这里that引导的是表语从句，that在从句中不作成分，只起引导的作用as引导的是时间状语从句。根据句意故选A。
点评：本题难度适中。这里考查的表语从句的连词，that在表语从句中不做成分，一般可省略，但是当它引导的是复合句时，连词that不能省略。
即学即练：She is not _______she was a few years ago.
A. as           B. that              C. what       D. when
解析：C。句意：她已经不是几年前的她了。