内容正文:
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:
1. Unit7:一般现在时被动(常态、常年环保规则)
2. Unit7:一般过去时被动(往年、过去完成的环保活动)
3. 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)
1. 肯定句:主语 + will be + done
2. 否定句:主语 + will not /won’t be + done
3. 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
1. 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
2. 否定句:be not going to be + done
3. 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
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)
1. 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。
2. 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。
3. 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。
4. 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)
1. 移位:主动句宾语提前,充当被动句主语;
2. 判断时态:看时间标志,将来动作选用 will be /be going to be;
3. 变形谓语:原动词改为过去分词;
4. 可选补充:需要点明执行者,句尾加 by + 动作发出人 / 机构。
转换示范
主动句:Students will hold an environmental show.
步骤 1:宾语 an environmental show 提前作主语
步骤 2:将来时 → will be
步骤 3:hold → held
步骤 4:执行者 students 加 by
被动句:An environmental show will be held by students.
六、动词过去分词重点变形(环保高频动词,易考易错)
1. organize — organized(组织活动)
2. hold — held(举办活动,极易误写 holded)
3. design — designed(设计海报)
4. send — sent(分发、运送传单衣物)
5. decorate — decorated(装饰场地)
6. discuss — discussed(讨论环保方案)
7. invite — invited(邀请嘉宾)
8. show — shown(播放视频、展示作品)
9. find — found(发现垃圾)
10. pollute — polluted(污染水体、空气)
11. affect — affected(影响健康)
12. hurt — hurt(伤害生物)
13. kill — killed(杀死动植物)
七、环保写作万能将来被动句型(书面表达高频,可直接套用)
校园环保周场景
1. A lot of leaflets about green living will be handed out to students this Friday.
本周五大量绿色生活宣传单将会分发给全体学生。
2. The school playground is going to be decorated with flowers and grass for Environment Week.
为迎接环保周,校园操场将用花草布置美化。
3. An environmental speech will be held in the town hall next week.
下周市政厅将举办一场环保主题演讲。
城市、社会环保政策场景
1. More waste-sorting bins are going to be put in every community next month.
下个月每个小区都会增设更多垃圾分类垃圾桶。
2. Strict rules will be made to cut down air and water pollution.
严苛法规将会被制定,减少空气与水污染。
3. Old clothes recycling stations will be built across the whole city in the future.
未来全城都会修建旧衣物回收站点。
八、全单元三大被动时态混合短文写作思路(D 板块写作要求拓展)
写作框架三段式,混合三种被动时态:
1. 过去段(一般过去时被动):介绍往年校园环保行动,例:Lots of trees were planted last year;
2. 常态段(一般现在时被动):介绍日常固定环保制度,例:All rubbish is separated in our school every day;
3. 未来段(一般将来时被动):介绍本周 / 今年即将开展的环保周活动,使用 will be /be going to be done。
九、学生高频易错点汇总(单选、句型转换丢分重灾区)
1. 将来被动漏写核心 be 动词(最高频错误)
❌ A show will hold.
✅ A show will be held.
❌ Activities are going to organize.
✅ Activities are going to be organized.
2. be going to 主谓单复数不匹配
复数主语 activities → are going to be held;单数 show → is going to be held
3. 不规则过去分词拼写错误:hold-held;send-sent;find-found
4. 不及物动词无被动:happen、appear、run out 绝对不能用于被动语态
5. 时态混淆:every day 用现在被动;last year 用过去被动;next week 用将来被动
6. will 后只能加动词原形 be,不能直接接过去分词
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