一般过去时语法.doc

。1、 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 didnt 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 / couldnt 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 / wasnt 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 / didnt，动词还原，构成否定句。例如： The famous singer sang some Chinese songs. The famous singer did not / didnt 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： dodid seesaw make