一般过去时表示过去某一时候或某一段时间所发生了的事情或存在的状态。常与过去时间yesterday, this morning, just now, a moment ago, in May, last night / year / week, once upon a time, the other day, before …, when – clause, in the past连用。如:
What did you do yesterday? 昨天你干了什么?
I was there a moment ago. 刚才我在那儿。
2. 一般过去时的应用
(1) 表示过去某时所发生的动作或存在的状态。如:
Liu Ying was in America last year. 刘英去年在美国。
Jim rang you just now. 吉姆刚才给你打了电话。
(2) 表示过去经常或反复发生的动作。常接时间副词often, usually, always, sometimes, every day / week, etc. 如:
We often went out for a walk after supper. 我们过去常在晚饭后散步。
We usually played together. 我们通常一起玩。
at risk冒风险;处于危险中
at the risk of sth./doing sth.冒…的危险
risk doing冒险做…
at one’s own risk自担风险
2. decide on sth对……做出决定
3. be/become/get accustomed to sth./doing sth.
accustom oneself to sth/ doing sth
习惯于某事/做某事
4. reach for sth 伸手去拿
5. take off 开除;取消/起飞/ /休假
He was taken off after twenty minutes.
6.quit (doing) sth. 停止做某事
7. find a cure for the disease找到…治疗方案
8. take effect/come into effect 生效
produce the desired effect 产生预期的效果
in effect/ in fact
have an effect on…
9. lay/place/put stress on…强调
stress the importance of …
be stressed out焦虑 under stress/strain
stress-related medical problems
Yoga is excellent for relieving stress.
①表时间,相当于一个时间状语从句,有时过去分词前可加连词 when 或 while 来强调时间概念。
Seen from the top of the hill, the city looked like a big garden.
Accepted by the Party, he decided to devote his life to the cause of the Party.
②表原因,相当于一个原因状语从句。
Exhausted, the children fell asleep at once.
Encouraged by the speech, the young people made up their minds to take up the struggle.
③表条件,相当于一个条件状语从句,有时过去分词前可用 if 等词
Heated, water changes into steam.
Given another chance, he will do better.
④表让步,相当于一个though/although引导的让步状语从句。
Laughed at by many people, he continued his study.
⑤表伴随,说明动作发生的背景或情况。
Surrounded by a group of pupils, the old teacher walked into the classroom.
The trainer appeared, followed by five little dogs.
2、复合形容词的构成
(1)形容词+ 名词+ ed kind-hearted 好心的,white-haired 白发的
(2)形容词+ 形容词red-hot 炽热的,dark-blue 深蓝的
(3)形容词+ 现在分词good-looking 好看的,easy-going 随和的
(4)副词+ 现在分词hard-working 勤劳的,fast-moving 快速转动的
(5)副词+ 过去分词hard-won 得来不易的,newly-made 新建的
(6)名词+ 形容词life-long 终生的,world-famous 世界闻名的
(7)名词+ 现在分词peace-loving 爱好和平的,fun-loving 爱开玩笑的
(8)名词+ 过去分词snow-covered 白雪覆盖的,hand-made 手工的
(9)数词+ 名词+ ed four-storeyed 4 层楼的,three-legged 3 条腿的
(10)数词+ 名词(名词用单数)ten-year 10 年的,two-man 两人的
(1) in表示“在某一时间段”或“在某一时候”,如用在月、季、年份、时代、世纪等时间名词的前面,或用来泛指一天的某一段时间。in也可以指“在……之后”,表示从说话起的若干时间内。
如: in July/summer/20xx/ancient times
The bus will be here in ten minutes.
(2) on表示“在特定的某一天”,也可用于带有修饰语的.一天的某个时间段之前。如:on Saturday, on Saturday morning, on the morning of August 1st
(3) at表示“在某一时间点”,或用来表示不确定的时间和短期的假日、时节等。
如:at six o'clock, at Easter
(4) over, through (out)两者均指“经过的全部时间”。
如:Stay over the Christmas.
(5) for与since:for表示动作或状态延续的全部时间长度,为“长达……”之意;since用于指从过去特定的某个时刻到说话时为止的一段时间;含有since时间短语的句子要用完成时,但含有for时间短语的句子不一定要用完成时。
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