Words and expressions
crispy adj. 脆的；易碎的 salty adj. 咸的；含盐的 sour adj. 酸的； 酸味的
by mistake 错误地 chef n. 厨师
sprinkle v. 撒（粉末状物）； 洒（液体）
Great Inventions
light bulb
+ 及物动词的过去分词”。 ②invent动词，意为“发明”，指发明以前从未存在过的
东西。 e.g. Do you know who invented the light bulb?
拓展：动词（发明）， 名词（发明） 名词（发明家）
辨析：invent/discover
2. It’s used for scooping really cold ice cream. (P69) ①be used for sth./doing sth.意为“被用来做某事”，表示
bush n. 灌木；灌木丛 fall into 落入；陷入 remain v. 留下；被遗留；剩余；
保持不变
Words and expressions
notice v. 注意到；察觉到 produce v. 生产；制造；产生 pleasant adj. 合意的；令人愉快的；
讨人喜欢的 mixture n. 混合；混合物；混合剂 in this way 这样
I’m sorry that I took your schoolbag _b_y_m__is_t_a_k_e. 【要点点拨】by mistake意为“错误地”， 常置于句末。
【拓展延伸】mistake作名词时，还可构 成短语：make a mistake犯错误。 mistake还可用作动词，常用于 mistake…for…表示“把……误认 为……”。如：
I mistook Kate for her sister when I met her yesterday.
7. Did you know that tea, the most popular drink in the world (after water), was invented by accident? by accident意为“偶然的，意外的”，同义词组为by chance; 反义词on p组urp为ose_____________
辨析：because, since与as
e.g. He failed because he was too careless. Since no one is against it, let’s carry out the plan.
As he wasn’t ready, we went without him.
[bʌlb]
personal computer
microwave oven
[maikrəweiv] [ʌvən]
calculator
[kælkjuleitə]
1. I think the calculator was invented before the computer. (P68)
①was invented意为“被发明的”，此结构为一般过去时 的被动语态。一般过去时的被动语态的构成为“was/were
because since
表示直接原因，语气最强，常用来回答why提出的问句，一 般位于主句后面
引导的从句的语气次于because引导的从句，常表示稍加分析 后而推断出来的原因，或指人们已知的事实，比as正式，常 置于句首
as
语气最弱，其原因只是对结果的附带说明，一般放在句首
5. y 咸的，含盐的 （P71）
拓展：annoyed也用作形容词，意为“烦恼的，生气的”，
其主语通常是人。常用短语： be annoyed with sb. 生某人的气 be annoyed about sth. 因某事而升起/烦恼
4.I’d like to have a radio because I could listen to music all day. (P70)
pie n. 馅饼 flying disk 飞碟；飞盘
bakery n. 面包店 Bridgeport 布里奇波特 Connecticut (美国) 康涅狄格州
throw v. 投；掷
Words and expressions
bulb n. 电灯泡；电灯 light bulb 电灯泡 microwave n. 微波 microwave oven 微波炉
意为“勺子”。
e.g. Please scoop a scoop of water for me.
3. Annoying inventions (P70) annoying形容词，意为“烦人的，令人厌烦的”，其主
语是物。 e.g. I think the alarm clock is an annoying invention.
salty形容词，意为“咸的，含盐的”，是由“名词salt +-y”构成的形容词。比较级和最高级分s别altie是r, s：altiest ___________
拓展：在英语中，很多名词后加-y可以构成形容词，如：
cloud
wind rain
sleep
6. The potato chips were invented by mistake. 【经典习题】完成句子： 很抱歉我错拿了你的书包。
Unit 9 When was it invented?
Catherina
Words and expressions
by accident 偶然地；意外地 beverage n. 饮料
according to 根据；按照；据……所说； 视……而定
ancient adj. 古代的；古老的 legend n. 传说；传奇故事 Shen Nong 神农
用途或目的，相当于be used to do sth.
e.g. Wood can be used for building houses.
=Wood can be used to build houses. 辨析：be used for/be used as/be used by ②scoop此处用作动词，意为“用勺舀”；用作名词时，