Unit 6 Lesson 21 Snow turns into water（分层作业）英语北京版四年级上册（新教材）

Unit 6 Lesson 21 Snow turns into water（分层作业） 基础练 一、选出每组中不同类的一项。 ( )1.A.sunny B.snowy C.nature ( )2.A.feed B.fruit C.collect ( )3.A.cold B.water C.ice ( )4.A.sun B.air C.green 二、Miss Wang在考查同学们对单词的掌握情况。根据英文释义写单词。 1.Not good. 2.Know sounds with ears. 3.The star that shines in the sky during the day. 4.To make something move around. 三、情景选择。 ( )1.天气很冷，你提醒朋友多穿衣服，你可以说： A.It's hot.Take off your coat. B.It's cold.Put on more clothes. ( )2.你想表达“有一些水在叶子上”,你可以说： A.There is some ice on the leaf. B.There is some water on the leaves. ( )3.朋友发烧了，你建议用冰袋敷头，你可以说： A.Put an ice bag on your head. B.Drink some hot water. 提升练 四、今天学校举办了“科学大讲堂”。根据图片提示，写出对应单词将句子补充完整。 1. 2. 3. 4. 1.The rises in the morning! 2.It's hot now.Snow into water. 3.It's for us to eat much ice cream in summer. 4.The water in the air gets cold on the . 五、从方框中选择合适的句子，补全对话。 1.A:What's wrong with Lily? B:She has a high fever. A:Let's put an ice bag on her head. B: 2.A:Look!There is some water on the leaves in the early morning.Why? B: 3.A:It's too hot! B:Yes.Oh,no!My ice is turning into water. A:Don't worry. A.Because it's cool at night.The water in the air turns into drops(水滴). B.It will help cool her body. C.Let's put the ice in here.It will turn into ice again. 六、阅读短文，判断下列句子正(T)误(F)。 Water is important to us and it has three states:gas(气体),liquid(液体),and solid(固体). When water is a gas,it's called water vapor(水蒸气).We can't see it.When it is hot,heat(热量)can make water turns into water vapor. Water is usually a liquid.We drink it,wash with it,and use it to water plants. When water gets very cold,it turns into ice,a solid.Ice is hard(硬的). Water in all three states is useful.Water vapor helps make clouds.All living things need liquid water.Ice can keep food cold. ( )1.We can see water vapor. ( )2.Heat makes water turn from liquid to gas. ( )3.Water is often a solid. ( )4.Ice is soft. ( )5.Living things need liquid water. 拓展练 七、阅读小水滴的旅行故事，将图片序号填入对应位置，完成旅行记录。 Little Water Drop lives in the sea.It is raining."I want to be up in the sky,”he says.The sun shines and Little Water Drop is hot.He goes up to the sky.It's cool.He is in a cloud.Little Water Drop flies over rivers and mountains.One day,he sees some trees.“We are thirsty.We need water,"say the trees.Little Water Drop falls down to the ground.A tree drinks him.Now Little Water Drop is inside the tree. 参考解析 基础练 一、选出每组中不同类的一项。 1.C（sunny、snowy 是天气形容词，nature 是自然，不同类 ） 2.B（feed、collect 是动词，fruit 是名词，不同类 ） 3.A（cold 是形容词，water、ice 是物质名词，不同类 ） 4.C（sun、air 是自然事物，green 是颜色形容词，不同类 ） 二、Miss Wang在考查同学们对单词的掌握情况。根据英文释义写单词。 1.bad（“Not good” 对应 “bad” ） 2.hear（“用耳朵知晓声音” 对应 “hear” ） 3.sun（“白天天空中发光的恒星” 是 “sun” ） 4.move（“让某物移动” 对应 “move” ） 三、情景选择。 1.B（天气冷提醒多穿，正确表达 ） 2.B（叶子上有水，正确表达 ） 3.A（发烧建议用冰袋敷头，正确表达 ） 提升练 四、今天学校举办了“科学大讲堂”。根据图片提示，写出对应单词将句子补充完整。 1.sun（图是太阳升起，填 “sun” ） 2.turns（雪变成水，“turn into”，主语 snow 是不可数名词，动词用第三人称单数形式 ） 3.bad（吃太多冰淇淋不好，填 “bad” ） 4.window（空气中的水在窗户上变凉，填 “window” ） 五、从方框中选择合适的句子，补全对话。 1.B（冰袋敷头帮助降温，选 B ） 2.A（解释叶子上有水的原因，选 A ） 3.C（把冰放起来再变成冰，选 C ） 六、阅读短文，判断下列句子正(T)误(F)。 1.F（文中 “We can't see it.”，水蒸气不可见 ） 2.T（文中 “heat can make water turns into water vapor” ） 3.F（文中 “Water is usually a liquid.” ） 4.F（文中 “Ice is hard.” ） 5.T（文中 “All living things need liquid water.” ） 拓展练 七、阅读小水滴的旅行故事，将图片序号填入对应位置，完成旅行记录。 1.第一空：D（小水滴在海里，太阳照射后上升，对应图 D ） 2.第二空：C（小水滴升到空中形成云，下雨，对应图 C ） 3.第三空：A（小水滴在云中飞过河流山脉，对应图 A ） 4.第四空：B（小水滴落到地面被树吸收，对应图 B ） 2 / 2 学科网（北京）股份有限公司 $