Unit4 Hands-on Fun Grammar 导学案2026-2027学年译林版八年级英语上册
Unit4 Hands-on Fun
⭐Grammar导学案
整体学习目标
- 掌握祈使句肯定、否定、礼貌、提议四种结构;区分 should / had better 语气强弱,会用两者正反提 DIY 手工建议;
- 掌握否定前缀 un- / in- / im- 构词规则,形容词加前缀表相反含义,能正确变形、在 DIY 话题中运用;
- 能在手工操作说明、DIY 建议、描述手工经历三类话题融合三类语法词汇;
- 小组合作运用语法、词汇写手工操作步骤、给同伴提手工建议、描述手工过程中不顺 / 不完美的情况,完成口语、书面分层输出。
第一部分 预习案(课前自主完成)
一、词汇预习・基础过关
(一)Grammar A 祈使句 Imperative sentences
1. 四类祈使句结构背诵
- 肯定祈使句:动词原形开头,表指令
- 否定祈使句:Don’t + 动词原形,表禁止
- 礼貌祈使句:句首 / 句尾加 please
- 提议共同做:Let’s + 动词原形 我们一起……
2. 手工操作动词(A1 方框词)
cut, draw, give, keep, look, try, write
3. 核心例句
Look for the mark. / Don’t mix them up. / Please hand me tools. / Let’s put wood together.
(二)Grammar B should & had better
1. 句式规则
- 肯定:should + 动词原形 / had better + 动词原形
- 否定:shouldn’t + 动原 / had better not + 动原
- 语气差异:had better 语气更强,表最好立刻做;should 温和建议
2. DIY 建议短语
read instructions carefully, be patient, be careful with scissors, join a DIY club
(三)Word power 否定前缀 un-/in-/im-
1. 前缀使用规则
- un-:多数普通形容词 lucky→unlucky, usual→unusual
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- in-:c /p 以外部分形容词 correct→incorrect, complete→incomplete
- im-:以 p 开头形容词 possible→impossible, polite→impolite
2. 变形清单
lucky-unlucky; usual-unusual; correct-incorrect; complete-incomplete; possible-impossible; polite-impolite
(四)核心句型预习(抄写 + 翻译)
- Cut paper with scissors. Don’t mix different sizes. Please follow the steps. Let’s make flashcards together.
译:________________________________________
- You should read instructions first. You’d better not take too much paint on the brush.
译:________________________________________
- It is impossible to finish it in one hour. His answer is incorrect.
译:________________________________________
二、预习思考
- 祈使句四种句式分别用来表达什么?否定祈使句开头加什么词?
- should 和 had better 在语气上有什么区别?否定形式怎么变?
- un- /in-/im- 分别加在哪类形容词前?作用是什么?
第二部分 课堂探究案(课中小组合作完成)
探究任务一:语法文本问题链分层研读
(一)A 祈使句 Imperative sentences
基础浅层问题
- We use ______ form of verb to tell people actions.
- Add ______ before verb for negative orders.
- Add ______ to make instructions polite.
- Use ______ to suggest doing things together.
进阶辨析问题
- 例句区分:
肯定:Cut the paper.
否定:Don’t mix them up.
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