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动词时态I(C)whilereadingtheEnglishtextbook,luckily,myroommatewokemeupintime!AhadfallenasleepBhavefallenasleepCfellasleepDfallasleep为什么不用A?fellasleep不是发生在wokemeup之前吗?

题目详情
动词时态
I (C )while reading the English textbook,luckily,my roommate woke me up in time!
A had fallen asleep B have fallen asleep C fell asleep D fall asleep
为什么不用A?fell asleep不是发生在woke me up之前吗?
▼优质解答
答案和解析
这句话的完整形式是:" I fell asleep while I was reading the English textbook ,luckily ,my roommate woke me up in time !"
这句话中的时间状语从句 " while I was reading the English textbook " 中省略了 " I was "
如果选 C " had fallen asleep " ,那么这句话的意思就变成了“我在我正在读课文之前就睡着了,好在我的室友及时将我叫醒.”这显然是不对的.
因为 fall asleep 和 wake up 这两个动作都发生在“我读课文时”,处于同一时态,所以都用过去时.