Unit 12 Review-2025-2026学年七年级下册英语词汇变形及词缀精讲（教科版）

7年级下册教科版 【复习专版】 词汇变形及词缀精讲 复习专版 【Unit 12】Review 词汇变形及词缀精讲 全部单元单词 decision/d'sI3n/n.决定；抉择 natural/naet fral/adj.自然的：duty/dju:ti/n.责任：义务：职责 earring/Iarm/n.耳环；耳饰 天然的：天生的 brain /brem/.n.大脑；头脑；智schoolwork/'skuw3k/n.功课： 力 学业 词汇变形及词缀精讲 1.decision/dr's3m/n.决定；抉择 动词形式：decide 构词解析：后缀-son:加在动词后，构成抽象名词，表”动作或过程的结果”。 同类词：discussion(讨论，-discuss)、revision（复习，←-revise) 例句：Making a decision too quickly may lead to mistakes. 真题链接（教科版7下同步练习）：After thinking for a long time,.he finally made a_(decide)to study abroad.(答案：decision) 2.natural/'naet fral/adj.自然的：天然的；天生的 名词形式：nature(自然：天性) 副词形式：naturally 构词解析：后缀-l:加在名词后，构成形容词，表”具有…性质的”；y构成副词。 同类词：cultural（文化的，←-culture)、national(国家的，←-nation) It's natural for children to be curious about the world around them. 真题链接（教科版7下教材例句）：We should try to protect the natural environment.. 3.schoolwork/'sk:lw3k/n.功课：学业 构词解析：合成词：school(学校)+wok(工作：任务)，指”学校的任务”即”功课”。 同类合成词：homework(家庭作业，home+work)、classwork(课堂作业，class+work) 例句：She spends two hours on schoolwork every evening. 真题链接（教科版7下同步练习）：You should finish your一(schoolwork)before watching TV.(答 案：schoolwork) 1 7年级下册教科版 【复习专版】 词汇变形及词缀精讲 4.duty/'dju:ti/n.责任：义务：职责 形容词形式：dutiful(尽职的：孝顺的) 构词解析：后缀-y:加在形容词后，构成抽象名词，表”性质、状态”。 同类词：safety(安全，←-safe)、loyalty(忠诚，←-loyal) 例句：It's our duty to help the elderly in need 真题链接（教科版7下同步练习)：As a student,.finishing homework on time is your_(duty).(答 案：duty) 综合训练 一、 根据句意及汉语提示完成单词 6.After careful consideration,she made a final (to accept the job. 7.We should try our best to protect the一（自然的）resources around us. 8.As students,we need to finish our()on time every day. 9.It is our_(债任)to help those in trouble. 10.The_(of children is to explore and learn new things. 二、用所给单词的适当形式填空 1.You need to(decision)what to do next before the meeting starts 2.She has a_(nature)ability to get along with people easily. 3.The teacher praised him for his hard work on his(schoolwork). 4.A_(duty)student always helps others in class. 5.He speaks English so(natural)that many people think he is from America. 6.We had a long_(discuss)about the plan yesterday afternoon. 三、完成句子（每空一词） 1.他花了两个小时做功课。 He spent two hours on his_ 2.保护环境是我们的责任。 It's our_to protect the environment 2 7年级下册教科版 【复习专版】 词汇变形及词缀精讲 3.她天生就有唱歌的天赋。 She has a talent for singing 4.经过讨论，他们最终做出了决定。 After the,they finally made a_. 四、语篇填空 阅读下面短文，在空白处填入一个适当的单词或用括号内单词的正确形式填空，使短文通顺、连 贯。 Everyone has to make_(decide)in life.Some decisions are easy,but others are hard.For example, choosing a hobby is a-(nature)part of growing up.It can help you relax from busy-(schoolwork). Remember,it's your(duty)to choose something you really enjoy.When you do it,you will find happiness_(natural). 参考答案 I根据句意及汉语提示完成单词 6.decision 7.natural 8.schoolwork 9.duty 10.nature Ⅱ用所给单词的适当形式填空 1.decide 2.natural 3.schoolwork 4.dutiful 5.naturally 6.discussion II.完成句子 1.schoolwork 2.duty 3.natural 4.discussion;decision V.语篇填空 1.decisions 2.natural 3.schoolwork 4.duty 5.naturally 3