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ãç»ææ¯was/were + ç°å¨åè¯ã
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ã主è¦çå¥ååé¢çæ¶é´ç¶è¯ï¼ä¸è¬è¿å»æ¶:last week/year/month, yesterday ,yesterday evening/morning/afternoon, just now, the day before yesterday
è¿å»è¿è¡æ¶ï¼at 2 o'clock yesterday ,at this time last week.
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