23-24高二下·全国·课前预习
1 . Pay attention to the structure of these sentences and fill in the table below.
主动语态 | 被动语态 | |||
肯定式 | 否定式 | 肯定式 | 否定式 | |
一般式 | doing | _____ | _____ | _____ |
完成式 | _____ done | _____ | having been done | _____ |
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