问题
选择题
I was about to leave my house________the phone rang.
A．while
B．when
C．as
D．after
答案
答案：B
be about to do与when连用。该题里面没有状语从句, when是一个并列连词，提供额外信息，常容易和时间状语从句混淆。
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I was about to leave my house________the phone rang.
A．while
B．when
C．as
D．after
答案：B
be about to do与when连用。该题里面没有状语从句, when是一个并列连词，提供额外信息，常容易和时间状语从句混淆。
