新教科版英语三年级下册Unit 6 I’m on Duty 同步练习（含答案）

中小学教育资源及组卷应用平台
Unit 6 I’m on Duty
站立 队伍 带领 路线
搬运 食物 出 试卷
午餐 灯；轻的 黑板 门
植物 星期一 四月 他
非常 应该 一些 西红柿
工作 很
值日 列队小帮手
午饭小帮手 老师小帮手
帮助大家站好队 在队列中带路
搬运餐盒 分发食物
分发试卷 整理书本
帮忙 排队 举起
（Get Started Task A）知识点总结 + 习题
核心知识点
1. 3 类班级岗位 & 对应职责（必背词汇）
2. 关键句型 & 语法
询问职责：What do you need to do for each job （每个岗位你需要做什么？）
回答职责：I need to + 动词短语（我需要……）
例：I need to hand out food.
核心语法：need to do sth.（需要做某事），to 后必须接动词原形
高频短语：
stand in line 排队
lead the way 带路
carry food boxes 搬餐盒
hand out 分发
put away 收好、整理
3. 易错点避雷
I need hand out papers.（缺 to，正确：I need to hand out papers.） hand out foods（food 表总称不可数，不加 s） help everyone stand in line 写成 help everyone stands in line（help 后接动词原形）
二、配套练习题（基础 + 拔高）
一、根据汉语补全短语
帮大家排队：help everyone ______ ______ ______
带路：______ ______ ______
搬餐盒：______ ______ ______
分发食物：______ ______ ______
分发试卷：______ ______ ______
整理图书：______ ______ ______
二、单项选择
A line leader needs to ______ everyone stand in line.
A. help B. helps C. helping
I need ______ hand out food.
A. / B. to C. for
"hand out" 的意思是：______
A. 上交 B. 分发 C. 拿走
A lunch helper can ______ food boxes.
A. carry B. carries C. carrying
Put away ______ after class.
A. book B. books C. a book
三、按要求改写句子
I need to hand out papers.（改为一般疑问句）
I need to lead the way.（对划线部分提问）
I need to carry food boxes.（改为否定句）
四、判断正误（√/× 并改正）
I need hand out food. ( ) ____________
Help everyone stands in line. ( ) ____________
Put away books, please. ( ) ____________
Hand out foods to classmates. ( ) ____________
五、连词成句
need, I, to, lead, the, way (.)
hand, out, I, need, to, papers (.)
help, stand, in, line, everyone (.)
Task B + Role-play知识点总结 + 习题
一、核心知识点（三年级适配）
1. 拓展班级岗位词汇
Light Helper（关灯助手）、Blackboard Cleaner（擦黑板员）、Door Holder（开门员）、Book Helper（图书管理员）、Plant Helper（植物养护员）
2. 核心交际句型
询问岗位：What do you want to be （你想当什么？）
回答岗位：I want to be a + 岗位（我想当……）
例：I want to be a book helper.
核心语法：want to be + 岗位/职业（想要成为……），to 后接动词原形 be
3. 易错点避雷
I want to a line leader.（缺 be，正确：I want to be a line leader.） I want be a book helper.（缺 to，正确：I want to be a book helper.） What do you want to be 写成 What do you want be
二、配套练习题
一、补全对话
A: What do you want to be
B: I want to be a ______ ______（图书管理员）.
A: What do you want to be
B: I want to be a ______ ______（植物养护员）.
A: What do you want to be
B: I want to be a ______ ______（午餐助手）.
二、单项选择
I want ______ a line leader.
A. to be B. be C. to
—What do you want to be
—______
A. I want to be a teacher helper. B. I want a teacher helper. C. I want to a teacher helper.
"What do you want to be " 的意思是：______
A. 你需要做什么？ B. 你想当什么？ C. 你喜欢什么？
I want to be a ______ to clean the blackboard.
A. light helper B. blackboard cleaner C. door holder
三、按要求改写句子
I want to be a book helper.（对划线部分提问）
I want to be a line leader.（改为一般疑问句）
I want to be a plant helper.（仿写句子，用 blackboard cleaner）
四、判断正误（√/× 并改正）
I want to a lunch helper. ( ) ____________
What do you want to be ( ) ____________
I want be a door holder. ( ) ____________
I want to be a plant helper. ( ) ____________
五、连词成句
want, I, to, be, a, book, helper (.)
do, What, you, want, to, be ( )
want, to, be, I, a, line, leader (.)
六、情景交际
你想问同学想当什么班级岗位，应该说：______
A. What do you want to be B. I want to be a book helper. C. What do you need to do
你想表达 “我想当擦黑板员”，应该说：______
A. I want to be a blackboard cleaner. B. I need to clean the blackboard. C. What do you want to be
同学问你想当什么，你回答 “我想当开门员”，应该说：______
A. I want to be a door holder. B. I need to open the door. C. I want to a door holder.
Tip 1 知识点总结 + 配套练习题
一、核心知识点
1. 两组核心问答句型
2. 关键语法 & 易混辨析
want to be vs want to do 核心区别：
want to be 后接名词（身份 / 岗位），回答「想当什么」
want to do 后接动词短语（动作），回答「想做什么」
例：
I want to be a teacher helper.（be + 岗位名词）
I want to help my teachers.（do + 动词短语）
固定结构：want to 后永远接动词原形，be 是原形，不能变形
易错点避雷：
I want to a teacher helper.（缺 be，必须 want to be）
I want to helps my teachers.（to 后用原形 help，不能加 s）
What do you want be （缺 to，必须 want to be）
3. 可替换内容
可填岗位（want to be 后）：line leader, lunch helper, teacher helper, book helper, plant helper 等
可填动作（want to do 后）：help my teachers, hand out food, put away books, lead the way 等
配套练习题
一、补全对话
A: What do you want to be
B: I want to be a ______ ______（午餐助手）.
A: What do you want to do
B: I want to ______ ______ ______（帮老师）.
A: What do you want to be
B: I want to be a ______ ______（图书管理员）.
A: What do you want to do
B: I want to ______ ______ ______（整理图书）.
二、单项选择
—What do you want to ______
—I want to be a line leader.
A. be B. do C. /
—What do you want to ______
—I want to help my classmates.
A. be B. do C. /
I want ______ a teacher helper.
A. be B. to be C. to do
I want ______ my teachers.
A. help B. to help C. to be
—What do you want to be
—______
A. I want to help teachers. B. I want to be a book helper. C. I want to do homework.
三、按要求改写句子
I want to be a teacher helper.（对划线部分提问）
I want to help my teachers.（对划线部分提问）
I want to be a line leader.（改为一般疑问句）
I want to hand out food.（改为一般疑问句）
四、判断正误（√/× 并改正，易错点专项）
I want to a teacher helper. ( ) ____________
I want to helps my teachers. ( ) ____________
What do you want be ( ) ____________
I want to be a line leader. ( ) ____________
I want to do a lunch helper. ( ) ____________
五、连词成句
want, to, I, be, a, teacher, helper (.)
want, to, I, help, my, teachers (.)
do, What, you, want, to, be ( )
do, What, you, want, to, do ( )
六、情景交际（综合运用，贴合课堂）
你想问同学「你想当什么班级岗位」，应该说：______
A. What do you want to do B. What do you want to be C. I want to be a teacher helper.
同学问你「你想做什么」，你想回答「我想分发食物」，应该说：______
A. I want to be a lunch helper. B. I want to hand out food. C. What do you want to do
老师问你「你想当什么」，你回答「我想当领队」，应该说：______
A. I want to lead the way. B. I want to be a line leader. C. I want to do a line leader.
七、仿写填空
根据示例，补全 3 组完整对话（岗位 + 动作对应）：示例
A: What do you want to be
B: I want to be a teacher helper.
A: What do you want to do
B: I want to help my teachers.
A: What do you want to be
B: I want to be a ______ ______.
A: What do you want to do
B: I want to ______ ______ ______.（对应岗位动作）
A: What do you want to be
B: I want to be a ______ ______.
A: What do you want to do
B: I want to ______ ______ ______.
A: What do you want to be
B: I want to be a ______ ______.
A: What do you want to do
B: I want to ______ ______ ______.
Tip 2 知识点总结 + 配套练习题
核心知识点
1. 核心交际理念
Talking to friends is like playing ping-pong. Ask questions to keep the talk going.
中文意思：和朋友聊天就像打乒乓球，要通过提问让对话持续下去。
核心逻辑：对话是「你来我往」的，说完自己的想法后，要用反问句把话题抛给对方，避免冷场。
2. 本单元高频「续话题」句型（必背）
3. 完整对话示例（本单元适配）
A: I want to be a lunch helper. How about you B: I want to be a teacher helper. What do you want to do A: I want to hand out food. What about you B: I want to help my teachers.
4. 易错点避雷
只说自己的想法，不反问（对话会中断） How about you 写成 How about your （about 后接宾格you，不是物主代词your） 用陈述句续问（如 I want to be a line leader. You ，不规范，必须用完整问句）
配套练习题
一、补全对话
A: I want to be a line leader. ______ ______ ______
B: I want to be a book helper.
A: I want to help my teachers. What do you want to do
B: I want to ______ ______ ______（分发食物）.
A: I want to be a teacher helper. What do you want to be
B: I want to be a ______ ______（午餐助手）.
二、单项选择
—I want to be a lunch helper. ______
—I want to be a line leader.
A. How about you B. What do you do C. How are you
与 How about you 意思相同的是：______
A. What about you B. What do you want to be C. I want to be a teacher helper.
—What do you want to do
—______
A. I want to hand out food. B. I want to be a lunch helper. C. How about you
To keep the talk going, you should ______.
A. ask questions B. only talk about yourself C. say goodbye
三、按要求改写句子
I want to be a teacher helper.（用 How about you 改写对话）
A: I want to be a teacher helper. ______ ______ ______
B: I want to be a line leader.
I want to help my teachers.（用 What do you want to do 改写对话）
A: I want to help my teachers. ______ ______ ______ ______ ______
B: I want to put away books.
写出 How about you 的同义句：______ ______ ______
四、判断正误（√/× 并改正，易错点专项）
I want to be a lunch helper. How about your ( ) ____________
Talking to friends is like playing ping-pong. ( ) ____________
Ask questions to keep the talk going. ( ) ____________
I want to be a line leader. What about you ( ) ____________
五、情景交际
你和同学聊班级岗位，说完自己想当老师助手后，想让对话继续，应该说：______
A. How about you B. I want to help my teachers. C. Goodbye.
同学说 I want to be a book helper.，你想续问他想做什么，应该说：______
A. What do you want to do B. How about you C. I want to put away books.
下列哪个句子不能用来让对话持续？______
A. What do you want to be B. How about you C. I like apples.
六、补全完整对话（综合拔高，结合本单元所有知识点）
A: What do you want to be
B: I want to be a lunch helper. ______ ______ ______
A: I want to be a teacher helper.
B: What do you want to do
A: I want to help my teachers. ______ ______ ______ ______
B: I want to hand out food.
四、知识点拓展（三年级提升）
1. 续话题句型的使用时机
分享完自己的喜好 / 岗位后
回答完对方的问题后
想了解对方的想法时
易混句型对比
单词答案
stand，line，lead，way，carry，food，out，paper，lunch，light，blackboard，door，plant，Monday，
April，he，such，should，some，tomato，work，so
短语答案
on duty，line leader，lunch helper，teacher helper，help everyone stand in line，lead the way，
carry food boxes，hand out food,hand out papers,put away books ，help out，get in line,put up
一、Get Started Task A 答案
一、补全短语
stand in line
lead the way
carry food boxes
hand out food
hand out papers
put away books
二、单项选择
A 2. B 3. B 4. A 5. B
三、改写句子
Do you need to hand out papers
What do you need to do
I don't need to carry food boxes.
四、判断正误
× need to hand out food
× stands→stand
√
× foods→food
五、连词成句
I need to lead the way.
I need to hand out papers.
Help everyone stand in line.
二、Task B + Role-play 答案
一、补全对话
book helper
plant helper
lunch helper
二、单项选择
A 2. A 3. B 4. B
三、改写句子
What do you want to be
Do you want to be a line leader
I want to be a blackboard cleaner.
四、判断正误
× to be a lunch helper
√
× want to be
√
五、连词成句
I want to be a book helper.
What do you want to be
I want to be a line leader.
六、情景交际
A 2. A 3. A
三、Tip 1 答案
一、补全对话
lunch helper
help my teachers
book helper
put away books
二、单项选择
A 2. B 3. B 4. B 5. B
三、改写句子
What do you want to be
What do you want to do
Do you want to be a line leader
Do you want to hand out food
四、判断正误
× want to be a teacher helper
× helps→help
× want to be
√
× do→be
五、连词成句
I want to be a teacher helper.
I want to help my teachers.
What do you want to be
What do you want to do
六、情景交际
B 2. B 3. B
七、仿写填空（参考）
lunch helper; hand out food
line leader; lead the way
book helper; put away books
四、Tip 2 答案
一、补全对话
How about you / What about you
hand out food
lunch helper
二、单项选择
A 2. A 3. A 4. A
三、改写句子
How about you
What do you want to do
What about you
四、判断正误
× your→you
√
√
√
五、情景交际
A 2. A 3. C
补全对话How about you / What about you; What do you want to do