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1
did
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| v.动词do的过去式 | |
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2
was
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| v.(is,am的过去式)是,在 | |
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收听单词发音
1
did
|
|
| v.动词do的过去式 | |
参考例句: |
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|
|
2
was
|
|
| v.(is,am的过去式)是,在 | |
参考例句: |
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