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沪教牛津版英语八下Unit8 Imagine that!
重要知识点讲解
一、核心单词精讲
1. mention / men n/ v. 提到；说到
用法：后接名词、代词或动名词；常见搭配 mention sth. to sb.（向某人提及某事）。
例句：She mentioned that she would be late for the meeting.
2. tonight /t na t/ adv. 在今夜；在今晚
用法：指当天晚上，可作时间状语。
例句：We are going to watch a movie tonight.
3. frightened / fra tnd/ adj. 受惊的；害怕的
用法：形容人感到害怕；常见搭配 be frightened of…（害怕……）。
例句：The little girl was frightened of the dark.
4. throat /θr t/ n. 咽喉；喉咙
用法：指身体部位，常见搭配 have a sore throat（喉咙痛）。
例句：I have a sore throat and can't speak loudly.
5. cough /k f/ v. 咳嗽；n. 咳嗽声
用法：作动词时指咳嗽的动作；作名词时指咳嗽声或咳嗽病。
例句：He coughed all night because of the cold.
6. fear /f (r)/ n. 害怕；惧怕；v. 害怕；担心
用法：作名词时指恐惧的情绪；作动词时指害怕某事。
例句：She has a fear of heights.
7. ugly / ɡli/ adj. 丑陋的；难看的
用法：形容人或事物的外貌不好看。
例句：The old building looked ugly after the storm.
8. crazy / kre zi/ adj. 不理智的；疯狂的
用法：形容行为或想法不理智；常见搭配 be crazy about…（对……着迷）。
例句：He is crazy about space travel.
9. refuse /r fju z/ v. 拒绝；回绝
用法：后接名词、代词或动词不定式；常见搭配 refuse to do sth.（拒绝做某事）。
例句：She refused to answer the question.
10. emergency / m d nsi/ n. 紧急情况
用法：指突发的、需要立即处理的情况；常见搭配 in an emergency（在紧急情况下）。
例句：Call 120 in case of a medical emergency.
11. camera / k m r / n. 照相机
用法：指拍照的设备。
例句：He took a lot of photos with his new camera.
12. tent /tent/ n. 帐篷；帐棚
用法：指露营时使用的临时住所。
例句：We set up a tent in the forest for the night.
13. unnecessary / n nes s ri/ adj. 不需要的；不必要的；多余的
用法：指多余的或不需要的事物。
例句：The extra steps are unnecessary and can be skipped.
14. whether / we (r)/ conj. 是否
用法：引导宾语从句或主语从句，常与 or 连用。
例句：I don't know whether he will come to the party.
15. backward / b kw d/ adv. 朝反方向；倒着
用法：指方向相反；常见搭配 go backward（倒退）。
例句：He walked backward to avoid stepping on the wet floor.
16. disappoint / d s p nt/ v. 使失望
用法：后接名词或代词作宾语；名词形式为 disappointment。
例句：His bad grades disappointed his parents.
17. argue / ɑ ɡju / v. 争吵；争辩
用法：常见搭配 argue with sb.（与某人争吵）；argue about sth.（为某事争辩）。
例句：They argued about the best way to solve the problem.
二、重点短语精讲
keep quiet 保持安静
例句：Please keep quiet in the library.
because of 因为；由于
用法：后接名词、代词或名词性短语；区别于 because（后接句子）。
例句：The game was cancelled because of the rain.
in fear 恐惧地
例句：The children ran away in fear when they saw the snake.
landing site 着陆位置；登陆地带
例句：The spacecraft found a safe landing site on the planet.
agree with 同意；和……意见一致
用法：后接人或某人的观点、决定。
例句：I agree with you on this matter.
disagree with 不同意；不一致
例句：He disagrees with the plan to build a new factory.
move about 四处走动
例句：The animals move about in the forest to find food.
in all directions 向四面八方
例句：When the alarm went off, people ran in all directions.
speed up 加速
例句：The car speeded up to overtake the truck.
三、核心句式精讲
1. be sure (that) + 从句
用法：表示“确信……”，that 可省略。
例句：I'm sure (that) we will win the game.
2. 宾语从句
用法：在句中作宾语的从句，要用陈述语序。
常见引导词：that, what, when, where, whether 等。
例句：I wonder what it means.
例句：He asked whether we could help him.
四、核心语法：原因状语从句
1. 常用连接词
because：表示必然的因果关系，语气最强，常位于主句之后。
例句：We stayed at home because it was raining.
since：表示已知的、明显的理由，常位于主句之前，意为“既然”。
例句：Since you are free, let's go for a walk.
as：表示双方已知的原因，语气比 since 弱，位置灵活。
例句：As it is getting dark, we should go home.
2. because 和 because of 的区别
because：连词，后接句子，引导原因状语从句。
例句：He didn't go to school because he was ill.
because of：介词短语，后接名词、代词或名词性短语。
例句：He didn't go to school because of his illness.
小练习
用所给词的适当形式填空：
She refused ______ (accept) the gift from him.
I don't know whether he ______ (come) tomorrow.
The children ran away in ______ (frighten) when they saw the dog.
We stayed at home because of the ______ (heavy) rain.
He is crazy about ______ (play) football.
答案：
to accept
will come
fear
heavy
playing

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