New words：

essence [ˈesns] n. 本质；精髓；精华
essentially [ɪˈsenʃəli] adv. 本质上；基本上；根本上

必记高频搭配

the essence of… …… 的本质 / …… 的精髓

We should understand the essence of the story.

in essence 本质上；实质上

The two methods are different in essence.

the essence of success 成功的要素

Diligence is the essence of success.

essentially the same 本质上相同

The two methods are essentially the same.

essentially different 本质上不同

Their ideas are essentially different.

essentially speaking 基本上来说

Essentially speaking, practice makes perfect.

关键使用提醒

essentially = basically / in essence，作文可互换升级

普通：Basically, they are right.
高级：Essentially, they are right.

New words：

essential [ɪˈsenʃ(ə)l] adj.完全必要的；必不可少的；极其重要的；基本的；必需的

详细词源拆解：

essence = 本质、精髓
-ial = 形容词后缀
逻辑：本质的、必不可少的 → 极其重要的；必需的

词汇家族：

essence（本质）→ essential（必不可少的；本质的）→ essentially（本质上）

必记高频搭配

be essential for… 对…… 必不可少 （名词 / 事物）

Water is essential for all living things.

be essential to… 对…… 至关重要 （人 / 动词原形)

Good habits are essential to our success.

essential nutrients 必需营养素

The body needs many essential nutrients every day.

essential skills 基本技能；必备技能

Reading and writing are essential skills for students.

it is essential to do sth. 做某事是至关重要的

It is essential to protect the environment.

关键使用提醒:

1.中考必考句型：It is essential for sb. to do sth.

It is essential for us to learn English well.
学好英语对我们来说是至关重要的。

2.作文高级替换：

普通：very important
高级：essential

New words：

carbon [ˈkɑrbən] n.碳；

词性：n. 名词（不可数）
词根：carb = 碳
核心逻辑：化学元素 碳

词汇家族：

carbon → carbon dioxide（二氧化碳）→ carbon monoxide（一氧化碳）→ low-carbon（低碳的）

dioxide [daɪ'ɒksaɪd] n.二氧化物
monoxide [məˈnɒksaɪd] n.一氧化物

必记高频搭配

carbon dioxide 二氧化碳

Plants take in carbon dioxide and give out oxygen.

carbon monoxide 一氧化碳

Carbon monoxide is a harmful gas.

low-carbon life 低碳生活

We should live a low-carbon life to protect the earth.

carbon emissions 碳排放

We need to reduce carbon emissions.

emission [iˈmiʃ(ə)n] n.排放；辐射；排放物；(书刊)发行

New words：

fertile [ˈfɜrt(ə)l] adj.肥沃的；富饶的；能生育的；可繁殖的
fertilize [ˈfɜrtəˌlaɪz] v.施肥；使肥沃；使受粉；使受精；使受孕
fertility [fɜrˈtɪləti] n.肥沃；肥力；生育能力；丰产；富饶；

一句话串记（超好背）

The fertile soil needs farmers to fertilize it with fertilizer to keep its fertility.

必记高频搭配

fertile soil 肥沃的土壤 、 fertile land 良田

fertilize the field 给田地施肥 、 fertilize the soil 给土壤施肥

chemical fertilizer 化肥 、 organic fertilizer 有机肥

soil fertility 土壤肥力

New words：

fertilizer /ˈfɜːtəlaɪzə(r)/ n. 肥料

可数情况
表示 “不同种类的肥料” 时可加 s：

different fertilizers 不同的肥料

详细词源拆解：

fertil = 肥沃的、多产的
-ize = 动词后缀
-er = 名词后缀，表示物
逻辑：使土地肥沃的东西 → 肥料

词汇家族：

fertilizer（肥料）→ fertilize（v. 施肥；使肥沃）→ fertile（adj. 肥沃的）

必记高频搭配

chemical fertilizer 化肥

Too much chemical fertilizer is bad for the soil.

organic fertilizer 有机肥

Farmers prefer to use organic fertilizer these days.

add fertilizer 施肥

Farmers add fertilizer to help crops grow better.

organic [ɔrˈɡænɪk] adj. 有机的；不使用化肥的；绿色的；有机物的