Unit 6 Lesson 21 Snow Turns into Water（学习任务单）英语北京版四年级上册（新教材）

Unit 6 Lesson 21

Snow Turns into Water 学习任务单

班级________________________ 姓名________________ 学号________________

学习聚焦

学习目标	1. 准确认读 glass、turn、after、sun、bad 等核心词汇，掌握发音、词义及用法（如 turn into 表 “变成”、be bad for 表 “对…… 有害”）。（学习理解） 2. 在听、读、练活动中巩固 There be 句型、Why 引导的原因疑问句及形态变化句型，能运用核心知识完成句型补全、仿写等练习，准确率达 80% 以上。（应用实践） 3. 能结合自然现象场景，用所学词汇和句型描述水的形态变化、询问原因并提出建议，提升语言运用的灵活性与实用性。（迁移创新）
核心词汇	glass（玻璃）, turn（变成）, after（在…… 之后）, sun（太阳）, bad（糟糕的）
核心句型	1. There is ice on the window. 2. Why is there ice? The room is warm, and the glass is cold. The water in the air gets cold on the glass. It turns into ice. 3. Let's go out and have fun after class.
语法要点	1. There be 句型：单数 / 不可数主语用 is，复数主语用 are； 2. 形态变化：主语 + turn (s) into + 名词（主语为三单时 turn 变 turns）； 3. 原因询问：Why + is/are + there + 主语？（答句用 Because 引导原因）。

温故知新

1. I am on my uncle's ______ now.（  ）

A. farm  B. park  C. zoo

2. Every day, I ______ the cows and feed the pigs.（  ）

A. smell  B. milk  C. hear

3. Sometimes, I ______ the flowers in the morning.（  ）

A. look  B. listen  C. smell

4. Can you ______ the sheep? They're calling.（  ）

A. hear  B. listen  C. feed

5. What a ______ time on the farm!（  ）

A. bad  B. wonderful  C. cold

课堂练习（对应教学设计课堂练习板块）

【学习任务一】句型补全（用 is/are 填空）

1. There ________ some milk in the glass.
2. There ________ three pens and a ruler in the pencil-box.
3. There ________ a beautiful flower in the garden.
4. There ________ some bread on the plate.
5. There ________ no water in the bottle.

【学习任务二】句型补全（用括号内单词的适当形式填空）

1. Why ________ there ________（rain）today?
2. The air is cool, and the water ________（get）cold. It ________（turn）into ice.
3. Why ________ there ________（fog）in the morning?
4. The sun ________（come）out, and the ice ________（turn）into water.
5. The temperature is low, and the water in the river ________（become）ice.

【学习任务三】句型仿写（根据提示完成句子）

1. Let's ____________（去公园）and ____________（放风筝）this Sunday.
2. Let's not ___________（看电视）.
3. Let's ________________（听音乐）and ______（聊天）.
4. Let's ___________（吃晚饭）at that new restaurant and __________（看电影）afterwards.

【学习任务四】用括号内词汇的适当形式填空，补全句型（每词限用一次）

1. There is ______ on the ______. (sun, glass)
2. Why is the fruit ______? Because it's not in the ______. (bad, sun)
3. Let's ______ on the grass ______ school. (after, turn)
4. The water ______ into steam when it's hot. (turn)

【学习任务五】句型补全（用 is/are 或 some/any 填空）

1. There ________ ________ snow on the ground in winter.
2. There ________ a bird in the sky. Can you see it?
3. ________ there ________ milk in the bottle? I want to drink it.