Unit8 A Green World Grammar 知识点清单2025-2026学年译林版八年级英语下册
Unit 8 A Green World
⭐Grammar知识点清单
一、语法定位与衔接
1. 体系衔接
本课时完成三大时态被动语态全部教学,形成完整被动体系:
- Unit7:一般现在时被动(常态、常年环保规则)
- Unit7:一般过去时被动(往年、过去完成的环保活动)
- Unit8 Grammar:一般将来时被动(尚未发生、计划开展的环保活动、未来环保政策)
2. 使用场景核心规则(课本原文)
一般将来时被动语态,专门描述动作还未发生、将要 / 计划发生,且主语是动作承受者;不需要强调动作发出者时可省略 by 短语,需要点明执行者则在句尾加 by + 人 / 机构。
3. 话题载体
全篇以校园Environment Week 环保周、城市环保展、污染治理为语境,所有例句、习题全部贴合单元环保主题,可直接迁移至环保作文、口语问答。
二、两大标准结构(必背公式,分肯定 / 否定 / 疑问)
结构 1:will + be + 动词过去分词(单纯表将来,临时决定、客观将来)
- 肯定句:主语 + will be + done
- 否定句:主语 + will not /won’t be + done
- 一般疑问句:Will + 主语 + be + done?
结构 2:be going to + be + 动词过去分词(预先计划、安排好的将来活动)
根据主语单复数匹配 be 动词 am /is/are
- 肯定句:I am going to be done; He/She/It is going to be done; You/We/They are going to be done
- 否定句:be not going to be + done
- 一般疑问句:Am / Is / Are + 主语 + going to be + done?
表格变形总览
主语 | will 型将来被动 | be going to 型将来被动 |
I | will (not) be + 过去分词 | am (not) going to be + 过去分词 |
You / We / They | will (not) be + 过去分词 | are (not) going to be + 过去分词 |
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主语 | will 型将来被动 | be going to 型将来被动 |
He / She / It / 单数事物 | will (not) be + 过去分词 | is (not) going to be + 过去分词 |
关键配套规则 by 引出执行者
将来被动句末尾可加 by + 动作发出者,明确谁来执行动作;无需要时可省略。
例句:A recycling activity is going to be held by our class teachers.
三、时态区分:三大被动语态完整对比(期末单选、完形高频辨析)
时态 | 结构 | 时间标志词 | 环保话题例句 |
一般现在时被动 | am / is / are + done | every year, usually, often | Trees are planted every spring. |
一般过去时被动 | was / were + done | last year, yesterday, in 2024 | Lots of trees were planted last Environment Week. |
一般将来时被动 | will be / be going to be + done | tomorrow, this weekend, next week, this year | More green activities will be organized this year. |
四、课文例句深度解析(环保语境,区分两种将来被动)
- Last year, many trees were planted at the school during the Environment Week.
语法:一般过去时被动 were planted,对比今年将来活动
翻译:去年环保周,校园里栽种了许多树木。
- This year, other eco-friendly activities will be organized.
语法:will be organized 单纯将来被动,本年度将要举办
翻译:今年,更多环保活动将会被组织开展。
- A recycling event is going to be held at our school.
语法:is going to be held 计划安排好的将来被动,提前规划的回收活动
翻译:一场回收活动即将在校内举办。
- Old clothes and shoes will be sent to poor areas.
语法:will be sent 将来被动,表物品将要被送往贫困地区
翻译:旧衣物和鞋子将会被送往贫困地区。
五、主动变被动万能四步解题法(学生做题核心模板)
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