New words：

rear [rɪr]

n. 后部；尾部；后方
adj. 后方的；后部的；后面的
v. 抚养；养育；饲养

详细词源拆解：

源自拉丁语 retro（向后、后方），本义指后面、尾部；

动词引申为 “把幼小生命从后方养育长大”，由此生出抚养、饲养；竖起、耸立多层含义。

词汇家族

rear（n./adj./v. 后部；抚养）→ rearing（n. 养育；饲养）

rear → rearward（adj./adv. 向后方的；在后面）

必记高频搭配

at the rear of 在…… 的后部

We sat at the rear of the classroom quietly.

rear door 后门

You can leave the house through the rear door.

rear seat 后座

Kids should sit in the rear seat of the car.

rear a child 抚养孩子

It takes much time to rear a child well.
Many families like to rear small animals in their free time.

New words：

awareness /əˈwernəs/ n. 意识；认识；了解；觉察 不可数
unaware /ˌʌnəˈwer/ adj. 没意识到的；未察觉的；不知道的；不知情的

必记高频搭配

raise /improve awareness of 提高…… 意识
The show helps raise our awareness of health.
We must build strong awareness of protecting our environment.

be unaware of 没有意识到；未察觉
He is unaware of the danger around him.
Many people are unaware of the harm of staying up late every day.

New words：

aware /əˈwer/
adj. 意识到的；察觉到的
adj. 知道的；了解的

只能作表语形容词，一般不放在名词前直接修饰。

详细词源拆解：

源自古英语词根 war/ware（留意、警惕），前缀 a- 加强状态，本义 “时刻留意、警觉的”。
慢慢引申为意识到的、知道的、察觉的。
同根词汇：warn（警告），本源都含 “留心、注意” 的含义。

词汇家族

aware → awareness（n. 意识；认识）
aware → unaware（adj. 没意识到的；不知情的）
unaware → unawares（adv. 不知不觉地）

必记高频搭配

be aware of 意识到；察觉

Most people are not aware of the danger around them.

be aware that… 知道；意识到……

I am aware that health is very important for students.

become aware of 开始察觉到

She soon became aware of her own small mistakes.

fully aware 充分了解；完全清楚

He is fully aware of his weak points in study.

New words：

disaster [dɪˈzæstər] n.灾害；灾难；灾祸；不幸

详细词源拆解：

源自意大利语，拆分词缀：dis- 否定 / 坏 + aster (星体、星象)；
古人认为星辰运转异常会带来厄运与灾祸，本义为 “凶星、不祥天象”，
后来词义固定，泛指灾难、灾祸、重大不幸、彻底失败。

词汇家族

disaster → disastrous [dɪˈzæstrəs]（adj. 灾难性的；极糟糕的）
disastrous → disastrously [dɪˈzæstrəslɪ]（adv. 灾难性地；糟糕至极地）

必记高频搭配

natural disaster 自然灾害

Floods and earthquakes are common natural disasters on the earth.

disaster area 灾区

Many volunteers went to the disaster area to help poor people.

suffer from a disaster 遭受灾难

The whole town suffered from a serious disaster last year.

cause a disaster 引发灾难

Bad weather may cause a terrible disaster in some places.

词性转换活用

disaster (n. 灾难)

We need to protect the environment to reduce natural disasters.

disastrous [dɪˈzæstrəs] (adj. 灾难性的)

The disastrous strong storm broke many green trees.

disastrously [dɪˈzæstrəslɪ] (adv. 灾难性地；糟糕至极地)

The whole sports meeting was disastrously influenced by bad weather.

New words：

extremely /ɪkˈstriːmli/ adv. 极其；非常；极度地

程度远超 very，写作高级替换词

必记高频搭配

extremely important 极其重要的

It is extremely important for teenagers to keep healthy living habits every day.

extremely difficult 极其困难的

This math problem is extremely difficult and only a few students can solve it.

extremely happy 极其开心的

She felt extremely happy when she received the good news from her teacher.

extremely cold /hot 极其寒冷的；极其炎热的

The wind is strong and the weather is extremely cold in the northern area in winter.

关键使用提醒

1. 语法用法：extremely 是程度副词，只能修饰形容词、副词，不能直接修饰名词。

2. 写作高分考点：extremely = very much，完美替换基础词 very，提升作文档次。

   He is extremely proud of his country’s great development.
   他为祖国的巨大发展无比自豪。

3. 反义词拓展：slightly（轻微地），程度刚好相反。