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pen。her coat。its tail。our class?! heir teachers。my brother’s。book。the cat’s ears。Mary’s mother 1 、過去完成時是一個相對時態(tài),表示過去的過去,只有在兩個過去發(fā)生的動作相比較時才可顯示出來。 As soon as we got to the station, the train had left. 注:主從句表達的動作緊接時,即兩動作發(fā)生的時間沒有明顯時間上的懸殊或空檔時,主從句都可用一般過去時。 . Where did your brother study before he joined the army? 2 、過去完成時可表示截止過去某一時間動作的總或動作的結(jié)束?! y the end of last month. We had reviewed four books By eight o`clock, he had finished his homework. 與這個時態(tài)連用的時間狀語常有: by 1985, by eight o`clock, by then, by the end of last month, by the ti