past progressive的意思|past progressive的解释-里氏词典

过去进行体；过去进行时

Write the following sentence in the simple past tense, past progressive tense and future tense.
请将下面的句子改写成一般过去时，过去进行时和一般将来时。
To state a mere past fact, we use simple past; to lay emphasis on the duration of the action, we use the past progressive.
一般过去时通常只说明过去某时发生某事，而过去进行体则侧重动作的持续时间，而不仅是说明事实。如。
This is the most common use of the past progressive. In this use, the past time reference is usually indicated by a temporal adverbial or implied by the context.
过去进行体作这一用法时，通常也都要把时间状语表示出来，或者通过上下文把时间关系暗示出来。

past progressive

[ noun ]
a progressive tense used to describe on-going action in the past
<noun.linkdef>
`I had been running' is an example of the past progressive

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