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

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