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1. 過去進(jìn)行時 談?wù)撨^去某個時候正在發(fā)生的事情 I was playing football at 3:30 yesterday. 談?wù)撨^去同時發(fā)生的兩件事 He was doing homework while his sister was watching TV. 過去進(jìn)行時和一般過去時出現(xiàn)在同一個句子中:
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