内容正文:
八年级下册
(人教版)英语
自主预习 知识梳理
重点单词
1. population n.
人口, 人口数, 集合
名词
(
1
) 表示人口 “多” “少” 时用
large/
big
和
small
修饰。
e.g. China has the biggest population in
the world.
中国有世界上最多的人口。
(
2
) 询问某地人口多少常用 “
What蒺s
the population of...?
” 句式。
e.g. What蒺s the population of India?
印
度的人口是多少?
(
3
)
population
常与
the
连用 , 作主语
时, 谓语动词常用第三人称单数形式。
e.g. The world蒺s population is increasing
very quickly.
世界人口正在快速增长。
(
4
) 当主语表示 “人口的百分之几、 几
分之几” 时, 谓语动词常用复数形式。
e.g. About seventy percent of the
population in China are farmers.
中国大约有
百分之七十的人口是农民。
2. achieve v.
达到; 完成; 成功
e.g. He will never achieve anything if he
doesn蒺t work harder.
如果他不更加努力工
作, 他会一事无成。
achievement n.
成就; 成绩
e.g. We felt a great sense of achievement
when we reached the top of the mountain.
当
我们到达山顶的时候, 我们有一种巨大的成
就感。
3. protect vt.
保护; 防护
e.g. There蒺re fewer and fewer animals.
It蒺s important for us to protect them.
动物们
越来越少, 对于我们来说保护它们很重要。
(
1
)
protect...from/against
保护……使不
受……; 防御
e.g. He is wearing sunglasses to protect
his eyes from the strong sunlight.
他戴着太阳
镜以遮挡强烈的阳光。
(
2
)
protection n.
保护, 防御
e.g. The hat will give protection against
the sun.
这顶帽子可遮阳。
(
3
)
under the protection of
在……的保
护下
e.g. The chicks are under the protection
of the hen.
小鸡们处在母鸡的保护下。
重点短语
1. feel free
随便, 轻松
e.g. I love my work, and I feel free.
我喜
欢我的工作, 我觉得我现在自由自在。
feel free to do sth.
随意做某事
e.g. If you need help with anything,
please feel free to ask me.
如果有什么需要我
帮助之处尽管找我, 请不要客气。
2. take in
吸入; 吞入 (体内)
e.g. Open the window and take in fresh
air.
打开窗户, 呼吸新鲜空气。
3. at birth
出生时
e.g. She weighed eight pounds at birth.
她
Unit 7 What蒺s the highest
mountain in the world?
54
What蒺s the highest mountain in the world? Unit 7
出生时重
8
磅。
4. up to
直到; 到……为止
e.g. Up to now, everything has been
successful.
到目前为止, 一切都很顺利。
第一课时
基础巩固 达标闯关
Ⅰ.
用所给词的适当形式填空。
1. The population of China is
(
big
)
than that of the US.
2. This tree is only 15 meters high, but
it蒺s the
(
high
)
of the three trees.
3. The Yangtze River is one of the
(
long
)
rivers in the world.
4. Many
(