问题
选择题
He went home for lunch ____ the clock struck twelve.
A．while
B．immediately
C．right away
D．at once
答案
B
immediately除了用作副词之外,还可用作从属连词, 引导时间状语从句,相当于as soon as。有类似用法的词或短语还有: directly, the moment, the instance, the minute等。