Unit 7 第2课时 Explore（分层作业）英语沪教版四年级下册（新教材）

Unit 7 How do things change?

Explore

基础练

一、选出下列单词中划线部分发音不同的一项。

(     )1. A. fridge      B. frog      C. friend

(     )2. A. flash       B. fruit      C. from

(     )3. A. fresh      B. fly      C. freezer

(     )4. A.crush      B. fry      C. freezer

二、根据句意及首字母提示填写单词，完成句子吧。

1. Ice is a s________.

2. Water is a l________.

3. Air is a g________.

4. Let’s m________ sugar and cream.

5. The ice cream will m________ in the sun.
6. We can make ice cream with i________, sugar and salt.

三、用所给词的适当形式填空。

1. Look! He ________ (mix) the sugar and cream.

2. They ________ (make) ice cream now.

3. She ________ (put) salt in the bag every time.

4. Let’s ________ (add) some chocolate.

5. The ice ________ (freeze) the mixture now.

四、单项选择题。

(     )1. —Shall we make some ice cream? —________

A. Sure!      B. Yes, it is.      C. No, I can’t.

(     )2. Ice ________ a solid.

A. am       B. is                    C. are

(     )3. We can ________ sugar and milk.

A. mixes      B. mixing      C. mix

(     )4. —What are you doing? —I’m ________.

A. shake      B. shaking      C. shakes

(     )5. The ice cream ________.

A. melt       B. melting                   C. melts

提升练

五、连词成句，注意大小写和标点符号。

1. make, ice cream, let’s, some (.)

_______________________________________________________

2. we, sugar, mix, and, cream, the (.)

_______________________________________________________

3. is, the, freezing, ice, mixture (.)

_______________________________________________________

4. are, you, what, doing (?)

_______________________________________________________

5. solid, a, is, ice (.)

_______________________________________________________

六、补全对话，从方框中选择合适的句子，将序号填在横线上。

A: Hi, class. 1. ________

B: We’re making ice cream.

A: The ice cream is gone. 2. ________

B: 3. ________

A: 4. ________

B: Great!

A: Look! 5. ________

七、【新题型·情景运用】根据课文内容补全短文。

Let’s make ice cream! We need ice, 1. ________, salt and 2. ________. First, 3. ________ the sugar and cream. Then put the mixture in a small bag. Next, put 4. ________ and ice in the big bag. Put the small bag inside. 5. ________, shake, shake, shake! The ice is 6. ________ the mixture. Now we

have ice cream!

拓展练

八、阅读理解，判断正 (T) 误 (F)

Everything in our world is a solid, liquid or gas. Ice is a solid. Water is a liquid. Air is a gas. Things can change. The ice melts and becomes water. The water freezes and becomes ice.

(     )1. Ice is a liquid.

(     )2. Water can change into a solid.

(     )3. Air is a gas.

(     )4. Ice melts and becomes air.

(     )5. Things can change.