She woke up feeling exhausted because she ___ very well.A.did not sleep B.was not sleeping C.had not slept D.would not sleep为什么选C?请解释下考点.

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She woke up feeling exhausted because she ___ very well.A.did not sleep B.was not sleeping C.had not slept D.would not sleep为什么选C?请解释下考点.

She woke up feeling exhausted because she ___ very well.A.did not sleep B.was not sleeping C.had not slept D.would not sleep为什么选C?请解释下考点.
She woke up feeling exhausted because she ___ very well.
A.did not sleep B.was not sleeping C.had not slept D.would not sleep
为什么选C?请解释下考点.

She woke up feeling exhausted because she ___ very well.A.did not sleep B.was not sleeping C.had not slept D.would not sleep为什么选C?请解释下考点.
woke up 是过去时,没睡好的动作在睡醒之前,过去的过去,用完成时
考点:时态语态

这里醒来本身就是一般过去时态,那睡这个动作在醒之前,所以要使用过去完成时态

过去完成时
前面woke up是一般过去时态,没睡好是之前的事情,所以用过去完成时。
她醒后觉得很疲劳,因为她没睡好。

睡觉发生在醒来之前,故表示过去的过去,所以用过去完成时态