以下为句子列表：
英文: Suppose the teacher is considering buying your computers, work in groups to write a report to persuade him or her, and give at least give 3 reasons, using Present Perfect Passive Voice and the expressions of giving opinions, reasoning and making a decisio
中文: 为了保证学生准备充分，在时间上应该有保证；在活动的过程中，老师应该提醒学生要在他们的讨论中注意用上现在完成时的被动语态。
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英文: The present perfect tense is always connected with present time，hence it is net used with“yesterday”，“last year”，etc.
中文: 现在完成时总是和现在有关，所以它不能和“昨天”、“去年”等一起用。
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英文: To grasp the usage of the present perfect tense.
中文: 掌握现在完成时态的用法.
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英文: We use the present perfect to talk about something that began in the past and still continues now.
中文: 我们使用现在完成式去说明某事开始于过去并持续到现在。
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