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Also note that the later past event does not need to be expressed with a Simple Past tense verb. You could just use a date or another time reference.
Right: By 1945: the United States HAD BEENat war for several years.
Using this construction, you can even make a tricky sentence in which the first clause expresses an early action in Simple Past. Then, a second clause expresses a later action in Past Perfect to indicate continued effect (by a still later past time).
Right: The band U2 WAS just one of many new groups on the rock music scene in the early 1980's, but less than ten years later, U2 HADfully ECLIPSED its early rivals in the pantheon of popular music.
在曼哈顿SC上看到这样一段话,例子和解释都没怎么看懂,求大神指教
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