一、一般过去时的用法
1. 表示过去某个特定时间发生的动作或存在的状态
• 这种情况常下与“just now刚才，yesterday昨天，last year去年，in 1999在
1999年，two days ago两天之前”等表示过去的时间状语连用。
She suddenly fell ill yesterday. We didn't have classes last week.
她昨天突然病倒了。 上周我们没有上课。
• 一般过去时亦可与“today今天，this week这周，this month这个月，this year
今年”等表示现阶段时间状语连用。如：
Did you meet him today?
今天你看见他了吗？
2. 表示过去的习惯性或经常发生的动作
• 一般过去时表示过去经常或反复发生的动作，常和“often经常，always总是，once
a week一周一次”等表示频度的时间状语连用。
I went to the cinema once a week when I was at school.
我上学时每周去看一场电影。
When I was in the countryside, I often walked by the riverside.
我在乡下时经常在河边散步。
• 表示过去一段时间内经常或反复发生的动作，也可以用would+动词原形或用used
to加动词原形：
When he was young, he would go skating every winter.
他年轻时每年冬天都要去滑冰。
Mrs Smith used to have a big house in down town.
史密斯夫人在城里曾经有一座大房子。
二、一般过去时的时间状语
1．由副词yesterday或由yesterday开头构成的短语：yesterday morning/ afternoon等。如：Where did you go yesterday? 昨天你去哪儿了？
2．由“last+表时间的名词”构成的短语：last week, last year等。如：I received two letters from my home last month. 上个月我收到两封家信。
3．由“时间段+ago”构成的短语：a moment ago, an hour ago等。如：They left two hours ago. 他们两小时以前离开了。
4．由“介词+时间名词”构成的短语：in 1998, on Monday, on April 12等。如：Napoleon did in 1821. 拿破仑死于1821年。
5．其它词或词组：then, just now等。如： The scientists lived in China then. 当时这些科学家住在中国。
一般过去时态的“三变”技巧
一变：肯定句变为否定句
【技巧1】当句中含有情态动词或助动词could，would，should等时，可直接在其后面加not构成否定句。例如：
I could get your coat. → I could not / couldn't get your coat.
【技巧2】当句中含有系动词was，were 时，可直接在其后加not构成否定句。例如：
I was on the Internet when you called me. → I was not / wasn't on the Internet when you called me.
【技巧3】当句中谓语是除情态动词、助动词、系动词was,were以外的动词时，在该动词之前加did not
/ didn't，动词还原，构成否定句。例如：
The famous singer sang some Chinese songs. → The famous singer did not / didn't sing any Chinese songs.
二变：陈述句变为一般疑问句
【技巧1】移动词语的位置。将was，were,could，would，should等移到句首。例如：
He could pack his things himself. → Could he pack his things himself?
【技巧2】添加助动词did。谓语是除情态动词、助动词、系动词was,were以外的动词时，在主语之前加did，动词还原。例如：
Mr Li looked very old. → Did Mr Li look very old?
三变：陈述句变为特殊疑问句
【技巧1】确定疑问词：人who / whom，物what，地点where，时间when / what time，原因why，频率how often，长度how long，距离how far等等。例如：
They gave the concert last night. → When did they give the concert?
【技巧2】辨认结构形式：疑问词+情态动词/助动词/ was / were / did +主语+...? 例如：
The accident happened near the station. → Where did the accident happen
一些不规则变化：
do>did see>saw make>made take>took eat>ate
read>read put>put get>got hear>heard feel>felt等等
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