Unit 6 Energy, nature and us 核心语法（专项训练）-2026-2027学年人教PEP版英语六年级上册

【人教PEP版六年级上册】

Unit 6 Energy, nature and us 核心语法专项训练

单元语法小结

一、情态动词must / mustn’t

1. 用法：must+动词原形表示必须遵守的环保、节约能源硬性规定；mustn’t+动词原形表示禁止破坏自然、浪费能源的行为，语气强硬，用于规章制度、行为准则。

2. 语法特征：无人称、数的变化，所有人称直接使用must/mustn’t。

3. 句式变换

一般疑问句：Must + 主语 + 动词原形？

肯定回答：Yes, 主语 + must.

否定回答：No, 主语 + needn’t / don’t have to（不能用mustn’t回答）

例句：We must save electricity.

We mustn’t cut down too many trees.

二、There be句型

1. 基础结构

There is + 不可数名词/单数可数名词（coal, oil, wood, energy, river）

There are + 可数名词复数（trees, rivers, factories, bottles）

2. 就近原则：be动词单复数由紧邻的第一个名词决定。

3. 否定：There isn’t / There aren’t，用于表示资源匮乏。

三、可数名词与不可数名词

1. 不可数名词（无复数，搭配much/little，不可直接加a/an）：energy, coal, oil, water, wood, plastic

数量表达：a lot of energy, a little clean water

2. 可数名词（有复数，搭配many/few）：tree, lake, bottle, bin, factory

复数变化：tree-trees, factory-factories, bottle-bottles

专项练习

一、选词填空（must / mustn’t）

1. We ________ turn off the lights when we leave the room to save power.

2. People ________ pour dirty water into the rivers.

3. You ________ throw rubbish everywhere in the forest park.

4. Everyone ________ reuse paper to cut down wood use.

5. We ________ waste clean tap water when washing hands.

二、用所给名词正确形式填空

1. We need more ________ (tree) to make fresh air.

2. There is lots of ________ (coal) in this area for power.

3. Don’t use too many plastic ________ (bottle).

4. Little ________ (oil) is left if we use it carelessly.

5. Those ________ (factory) make the lake dirty.

三、用There is / There are 填空，注意就近原则

1. ________ some clean water and green grass on the hillside.

2. ________ many dead fish in the polluted river.

3. ________ not much natural gas in this mountain.

4. ________ a few bins and a sign near the gate.

5. ________ plenty of waste plastic on the beach.

四、写出动词现在分词形式

1. save ________

2. make ________

3. run ________

4. use ________

5. stop ________

五、用be动词(am/is/are)搭配动词ing，补全现在进行时句子

1. Look! They ________ ________ (collect) waste paper for recycling.

2. My mother ________ ________ (cook) with less natural gas now.

3. I ________ ________ (turn) off the idle air conditioner.

4. The factory ________ ________ (pour) waste into the stream.

5. These children ________ ________ (plant) young trees by the lake.

六、判断正误(T/F)，错误的在横线上改正

1. There are some oil in the ground. (   ) ________