小学英语一般过去时新版本.ppt

. 一般过去时的用法与结构详解 时态和时间 表示： past now future 动词过去式 的构成 规则动词 regular verbs 不规则动词 irregular verbs 规则动词过去式的构成 1、一般在动词末尾加– ed （掌握） look Walk paint play clean Visit Want cough watch look ed Walked painted play ed cleaned Visited Wanted coughed watched 2、结尾是 e 的动词只加 -- d (了解) live hope use lived hoped used 3.重读闭音节词， 先双写这个辅音字母，再加—ed stop Pat stopped Patted (掌握) 4. 以“辅音字母+y”结尾的词， 先变“y”为“i”再加—ed study Worry studyied Worryied 不规则动词过去式的构成 1.过去式与原形一样(了解) let→let（让） put→put (放下） cut → cut（砍，剪） read→read（读） let→let（让） put→put (放下） 2.把元音字母变成“a” come came（掌握） give gave Become became drink drank（了解） begin began 剩余不规则动词 剩余不规则动词表 Infinitive Past Tense am, is are do go have make get Infinitive Past Tense eat say see was were did went had made got ate said saw 一般过去时肯定句变否定句 Be动词类 否定句 实义动词类 1． （be动词类）在表示过去存在的状态 的句子中在was, were的后面加上not。 如： 肯定句： He was in the park the day before yesterday. 否定句： →He was not in the park the day before yesterday. 肯定句： We were busy last week. 否定句： →We were not busy last week. 2．（行为动词类）要在行为动词的前面加助动词didn’t. 然后把动词过去式改为动词原形。即：didn’t + 动词原形 肯定句： She played the violin last night. 否定句： →She didn’t play the violin last night. 肯定句： They swam in the lake yesterday. 否定句： →They didn’t swim in the lake yesterday. 一般过去时否定句练习 肯定句: They made a kite a week ago. 否定句：They didn’t make a kite a week ago. 肯定句： He was ill yesterday. 否定句：He was not ill yesterday. 肯定句：The cat ate a bird last night. 否定句：The cat didn’t eat a bird last night. 一般过去时的一般疑问句