Unit 4 单词详解表 -2025-2026学年外研版英语八年级上册

单词

常见搭配

考点提示

经典例句

digital /ˈdɪdʒɪtl/ (adj. 数字的，数码的)

digital camera（数码相机）；digital technology（数码技术）；digital screen（数字屏幕）

形容词，可作定语或表语；反义词为analog（模拟的）

We live in a digital world now.This is a digital watch that can take photos.

century /ˈsentʃəri/ (n. 世纪)

in the 21st century（在21世纪）；a century ago（一个世纪前）；for centuries（数世纪以来）

可数名词，复数为centuries；序数词为century（序数词形式为the ...th century）

Many great inventions appeared in the 20th century.People have lived here for centuries.

forever /fəˈrevə/ (n. 极长的一段时间)

for forever（很久）；last forever（永远持续）

不可数名词，也可作副词表“永远”（副词用法更常见）；注意与for ever区分，二者含义相同

It took forever to finish the work.Her memory will live forever in our hearts.

smartphone /ˈsmɑːtfəʊn/ (n. 智能手机)

a smartphone app（智能手机应用）；use a smartphone（使用智能手机）；smartphone camera（手机摄像头）

可数名词，复数为smartphones；由smart和phone构成的复合名词

I bought a new smartphone last month.Smartphones make our life more convenient.

wallet /ˈwɒlɪt/ (n. 钱包)

a leather wallet（皮钱包）；lose one’s wallet（丢钱包）；a wallet full of cash（装满现金的钱包）

可数名词，复数为wallets；美式拼写可写作billfold

He took out his wallet to pay for the meal.My mother gave me a new wallet as a birthday gift.

payment /ˈpeɪmənt/ (n. 支付，付款)

make a payment（付款）；cash payment（现金支付）；online payment（在线支付）

可数/不可数名词，表“付款行为”时不可数，表“一笔付款”时可数；动词形式为pay（支付）

You can make a payment by credit card.The payment for the house is due next month.

cash /kæʃ/ (n. 现款，现金)

pay in cash（用现金支付）；cash register（收银机）；withdraw cash（取现金）

不可数名词；形容词形式为cash（现金的），如cash payment

Do you have enough cash to buy this book?He prefers to pay in cash rather than by card.

app /æp/ (n. 应用程序，应用软件)

a mobile app（手机应用）；download an app（下载应用）；social media app（社交媒体应用）

可数名词，复数为apps；是application的缩写形式

This app can help you learn English well.I have many useful apps on my phone.

oven /ˈʌvn/ (n. 烤箱，烤炉)

a microwave oven（微波炉）；an electric oven（电烤箱）；bake a cake in the oven（在烤箱里烤蛋糕）

可数名词，复数为ovens；相关短语oven-safe（可放入烤箱的）

She baked bread in the oven this morning.We need to preheat the oven before cooking.

except /ɪkˈsept/ (prep. 除……之外)

except sb./sth.（除了某人/某物）；except for（除了……之外，表局部例外）；except when/if（除了当……时/如果）

介词，后接名词、代词、从句等；与besides区分，except表“排除在外”，besides表“包含在内”

Everyone is here except Tom.Your composition is good except for a few spelling mistakes.

convenient /kənˈviːniənt/ (adj. 方便的，便利的)

be convenient for sb.（对某人来说方便）；a convenient time（方便的时间）；convenient transport（便利的交通）

形容词，可作定语或表语；副词形式为conveniently；名词形式为convenience（便利）

Online shopping is very convenient for busy people.Is it convenient for you to meet tomorrow?

development /dɪˈveləpmənt/ (n. 进步，发展)

economic development（经济发展）；the development of science（科学的发展）；in development（在发展中）

不可数/可数名词，表“发展”时不可数，表“发展成果”时可数；动词形式为develop（发展；开发）

The development of AI has changed our life greatly.We are proud of the development of our hometown.

mobile /ˈməʊbaɪl/ (adj. 非固定的，移动式的)

mobile phone（手机）；mobile store（移动商店）；mobile office（移动办公）

形容词，可作定语或表语；名词形式为mobility（移动性）

Mobile payment is popular in China now.The hospital has a mobile clinic for the elderly.

anywhere /ˈeniweə/ (adv. 任何地方，无论何

go anywhere（去任何地方）；not anywhere（无处

副词，用于否定句、疑问句或条件句中，相当于

You can’t park your car anywhere here.If you need help, you can call