Unit 3 重点单词
1. impression n. 印象；感想；印记
(1) n.make/leave a(n)..... impression on/upon给……留下..... 的印象
He left a good impression on me.
(2)vt.impress使印象深刻；使铭记；打动
impress sb with sth某事（物）给某人留下深刻印象The girl impressed her friends with humor.
be impressed by/with对……印象深刻;某事（物）给某人留下深刻印象I'm deeply impressed by the scenery. impress on sb sth= impress sth on sb 某事（物）给某人留下深刻印象; 使某人牢记，注意到某事（物）
My father impressed on me the value of hard work.
= My father impressed the value of hard work on me.父亲让我铭记努力工作的重要性。
(3)adj. impressive 给人印象深刻的；感人的The film was so impressive that we couldn't help crying.
2.take up
(1)拿起He takes up a pen and writes down his name.
(2)接受In order to get the job, I have to take up his suggestion.
(3)开始（从事）；学着（做）I have take up teaching since I graduated from university.
(4)占据（时间，空间等）Writing the paper took up most of the time. 写那篇论文占去了周末的大部分时间。
3.surround
(1)n. surroundings 周围的事物；环境Happiness comes from your inner life, not from your surroundings.
(2)adj. surrounding 周围的；周边的
(3)vt. surround 包围；环绕be surrounded by/with.... 被....环绕着；周围都是
The old man is surrounded by a group of children.
ck
(1)n. (a) lack of缺乏；缺少for/due to/because of lack of... 因缺乏....
A lack of food caused her to grow weak. I'm not worried about her lack of experience.
(2)v. lack sth 缺少某物（否定句中一般用lack for sth）
He really lacks confidence. She does not lack for friends.
5.lose sight of... 看不见catch sight of...看见，发现The place was so crowded；we soon lost sight of him.
in/within sight 在视野内out of sight 不在视野内Hurry up! The bus is already in/within sight.
come into sight 进入视野go out of sight 从视野中消失The town came into sight when we turned the corner. lose one's sight 失明He lost his sight six years ago.
6. speed
(1)speed up 加速，使......加速They have speeded up the production of the new car.他们加快了新汽车的生产速度。
(2) at a/the speed of... 以....的速度at (a)high/low speed以高速/低速
The car went at a speed of 100 kilometers an hour. The population of Beijing grew at a low speed.
7. desert
(1) vt.desert [di'zə:t] 抛弃，遗弃，放弃Helen was deserted by her husband.
(2)n. desert ['dezət] 沙漠，荒原
(3)adj. deserted [di'zə:tid] 无人居住的，空无一人的，被抛弃的
To his surprise, he found a deserted house in the desert.使他吃惊的是，他在沙漠里发现了一所无人居住的房子。
8.instant
(1)n. 瞬间；片刻for an instant 片刻at that instant 在那一瞬间
Just for an instant I thought he was going to refuse. At that instant the light went off.
(2)adj. 立即的；立刻的The telegram asked for an instant reply. 这封电报要求立刻回复。
“一.....就.....”大盘点;
(1)as soon as 引导的时间状语从句。
As soon as he finished his classwork, he ran out of the classroom.
(2)the moment/minute/instant/second...引导的时间状语从句。
She began to cry the instant she read the letter.
(3)immediately/directly/instantly作连词引导的时间状语从句。
The boy burst into tears instantly he saw his mother.
(4)hardly......when (5)no sooner...than (6)”on/upon+doing”结构。