内容正文:
Unit 1 Travel
一般过去时
(The Past Tense)
Part A
单元语法教学
一、 一般过去时的基本用法:
1. 表示过去某个时间发生的动作或存在的状态。常和表示过去的时间状语连用。
例如:yesterday, last night, in 1990, two days ago,just now等。
He was here just now. 他刚才还在这里。
What did you do yesterday? 你昨天做了什么事?
2. 表示过去习惯性、经常性的动作。常和often, always等表示频度的时间状语连用。
例如:We often played together when we were children.
我们小时候常在一起玩。
3. 表示过去主语所具备的能力和性格。
例如:At that time she was very good at English.
那时她英语学得很好。
二、 一般过去时的基本构成:
1. 系动词be的一般过去时:
was: 用于第一 、第三人称的单数形式
be过去式
were: 用于第二人称和第一、第三人称的复数形式
① 肯定句: 主语 + was / were + 其他。
He was at home yesterday.
They were at home yesterday.
② 否定句: 主语 + was / were + not + 其他。
He was not (wasn’t) at home yesterday.
They were not (weren’t) at home yesterday.
③ 一般疑问句: Was / Were + 主语 + 其他?
Was he at home yesterday?
Were they at home yesterday?
肯定回答: Yes, 主语 + was / were.
Yes, he was.
Yes, they were.
否定回答: No, 主语 + was / were + not.
No, he was not (wasn’t).
No, they were not (weren’t).
2. 实义动词的一般过去时:
① 肯定句: 主语 + v-ed (实义动词过去式) + 其他。
He bought a new car yesterday.
② 否定句: 主语 + 助动词did + not + 实义动词原形 + 其他。
He did not (didn’t) buy a new car yesterday.
③ 一般疑问句: 助动词Did + 主语 + 实义动词原形 + 其他?
Did he buy a new car yesterday?
肯定回答: Yes, 主语 + 助动词did.
Yes, he did.
否定回答: No, 主语 + 助动词did + not.
No, he did not(didn’t).
三、 动词过去式的规则变化:
1. 一般情况下,在动词词尾直接加“ ed ”.
work-worked visit-visited talk-talked play-played
2. 以不发音的字母“ e ”结尾的动词,只在词尾加“ d ”.
live-lived decide-decided move-moved save-saved
3. 以“ 辅音字母 + y ”结尾的动词,将 “ y ” 变为 “ i ” ,再加“ ed ”.
study-studied cry-cried carry-carried marry-married
4. 以重读闭音节结尾, 且末尾只有一个辅音字母的动词,先双写该辅音字母,再加“ ed ”.
stop-stopped drop-dropped plan-planned beg-begged
四、 常用动词过去式的不规则变化:
am/is-was are-were do-did go-went
read-read