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动词时态：一般现在时、过去时、进行时与现在完成时
Verb Tenses: Present/Past Simple and Progressive, Present Perfect
- 学科 语言与语言学
- 更新 2025-09-05
课件说明
Review present/past simple, present/past progressive, present perfect, and present perfect progressive tenses.
Verb Tenses: Present/Past Simple and Progressive, Present Perfect
Review present/past simple, present/past progressive, present perfect, and present perfect progressive tenses.