夜雨聆风
八下全书语法总框架
Unit1 Time to Relax 动词不定式 to do
Unit2 Stay Healthy 情态动词表建议 + 反身代词
Unit3 Growing Up 三大状语从句：although /until/so that
Unit4 The Wonders of Nature 形容词、副词比较级 & 最高级 + 大数表达
Unit5 Nature's Temper 过去进行时（was/were doing）+ when/while 区分
Unit6 Crossing Cultures 三类复合连词：as soon as /unless/so…that…
Unit7 A Good Read 现在完成时（基础：already/yet/ever/never）
Unit8 Making a Difference 现在完成时进阶：for/since + 延续性动词转换
Unit 1 Time to Relax 语法：动词不定式 to do
1. 基础结构
肯定：to + 动词原形否定：not to +动词原形
2.三大必考用法
1）作宾语（动词后固定搭配）
want/hope/decide/plan/try/learn/refuse/expect to do
例：I decide to take up painting.
2）作宾语补足语（动词 + sb.+to do）
ask/tell/want/invite/encourage sb. to do sth.
例：My teacher tells me not to stay up late.
省略 to 特殊词：make/let/see/watch/hear sb. do
3）作目的状语（表 “为了”，回答 why）
I run every morning to keep relaxed.
3. 高频句型
It’s + adj. + (for/of sb.) + to do sth.
Eg: It’s relaxing for me to listen to music.
4. 疑问词 + to do
what/when/where/how to do（省略从句主语）
I don’t know how to relax myself.
Unit 2 Stay Healthy
语法 1：情态动词表建议（should /could）
1)should 应该，语气强硬，直接提建议否定 shouldn’t
You should drink enough water every day.
2)could 可以，委婉柔和建议
You could take a walk after meals.
语法 2：反身代词（8 个，中考必考）
单数：myself, yourself, himself, herself, itself
复数：ourselves, yourselves, themselves
enjoy oneself 玩得开心
by oneself 独自
teach oneself 自学
look after oneself 照顾自己
Unit3 Growing Up 语法：三大状语从句（although /until/so that）
1. although让步状语从句（虽然，不能和 but 连用）
Although I feel tired, I still finish my homework.
2. until时间状语从句（直到）
① 肯定句：主句延续性动词，动作持续到从句发生
I wait until my mom comes home.
② not…until… 直到…… 才……，主句短暂动词
I didn’t go to bed until I finished chores.
3. so that 目的状语从句（以便、为了）
从句常搭配 can/could/will/would
She gets up early so that she can exercise.
⚠️ 区分：so that（目的）≠ so…that…（Unit6 结果从句）
Unit4 The Wonders of Nature 语法：形 / 副比较级、最高级 + 大数表达
一、原级 as…as
A + 谓语 + as + 原级 + as B: A 和 B 一样…
This lake is as clear as glass.
not as/so + 原级 + as A 不如 B…
This mountain is not so high as Qomolangma.
二、比较级than
修饰词：much, far, even, a little 加比较级表程度
much bigger 大得多；a little colder 有点冷
固定结构
比较级 + and + 比较级 : 越来越… → taller and taller
the + 比较级，the + 比较级 越… 越…
The more you read, the wiser you will be.
三、最高级
结构：the + 最高级 + in/of + 范围
The Nile is the longest river in the world.
one of the + 最高级 + 复数名词 最… 之一
one of the most amazing natural wonders
四、大数表达（新版新增）
hundred/thousand/million 前有数字不加 s；模糊搭配 hundreds of 数百
Unit5 Nature's Temper 语法：过去进行时 was/were doing
1. 基本结构
肯定: was /were+ doing
否定：wasn’t /weren’t doing
疑问：Was/Were + 主语 + doing?
2. 使用场景
过去某一时刻 / 某段时间正在发生的动作
标志词：at 8 last night, at that time, then
例：What were you doing when the rainstorm came?
3. when & while 核心区分（新版重难点）
when 后接短暂动词（一般过去时），主句过去进行时
I was reading when the light went out.
while 后接延续动词（过去进行时），主从句同时进行
We were talking while it was raining heavily.
Unit6 Crossing Cultures 语法：三类复合连词引导状语从句
1. as soon as 一…… 就……（时间状语）
主将从现：主句将来时，从句一般现在时
I will call you as soon as I arrive in Beijing.
2. unless 除非，如果不（条件状语，=if…not）
You will fail unless you study hard.
= If you don’t study hard, you will fail.
3. so…that… 如此……以至于（结果状语）
so + 形容词 / 副词 + that 从句
The box is so heavy that I can’t carry it.
⚠️ 对比 Unit3 so that（目的）：无形容词拆分，表 “为了”
Unit7 A Good Read 语法：现在完成时（基础入门）
1. 结构
have/has + 动词过去分词
I have finished my novel.
She has read this book twice.
2. 核心含义：过去动作对现在造成影响
3. 标志副词（本单元重点）
already 已经（肯定句）；yet 还 / 已经（否定、疑问）
ever 曾经；never 从不
例：I have never read this story.
Have you finished your homework yet?
Unit8 Making a Difference 语法：现在完成时进阶 for /since + 延续性动词
1. since + 时间点 /for + 时间段
since 2024 / since I was 10
for two years / for three months
2. 关键难点：短暂动词→ 延续动词转换（中考高频）
buy → have；borrow → keep；leave → be away；die → be dead；join → be in
错误：I have bought the bike for 2 years.
正确：I have had the bike for 2 years.
3. 用法区分
since：强调起点；for：强调时长
问句 How long 提问持续多久，必须用延续动词
