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1、名词变复数变化规则 (一)规则变化 名词单数变复数，直接加-s占多数； s,x,z,ch,sh来结尾，直接加上-es； 词尾是f或fe，加-s之前先变ve； 辅母+y在词尾，把y变i再加-es； 词尾字母若是o，常用三个已足够， 要加-es请记好，hero,tomato,potato。 (二)不规则变化 男人女人a变e，鹅(goose)足(foot)牙(tooth)oo变ee； 老鼠(mouse)虱婆(louse)也好记，ous变ic； 孩子加上ren，鱼鹿绵羊不用变。,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
2、 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
3、尾的词， 先变“y”为“i”再加ed,study Worry Early Happy,studyied Worryied Earlyied Happyied,不规则动词过去式的构成,1.过去式与原形一样(了解),letlet（让）,putput (放下）,cut cut（砍，剪）,readread（读）,letlet（让）,putput (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
4、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
5、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didnt. 然后把动词过去式改为动词原形。即：didnt + 动词原形,肯定句： She played the violin last night. 否定句： She didnt play the violin last night. 肯定句： They swam in the lake yesterday. 否定句： They didnt swim in the lake yesterday.,一般过去时否定句练习,肯定句: They made a kite a
6、 week ago. 否定句：They didnt 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 didnt eat a bird last night.,一般过去时的一般疑问句,1.把was, were放在句首，其余位置不变。,（1） He was born in Shanghai. Was he born in Shanghai? (一般疑问句) Yes, he was. (肯定回答
7、) No, he wasnt. (否定回答),一般过去时 1一般过去时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。 Yesterday(昨天)， last night（昨天晚上）， last week (上周) Last Sunday（上周日） in 1990 just now （刚才）, long long ago（很久以前）,（2）They were in Li Yans home last night. Were they in Li Yans home last night? （一般疑问句） Yes, they were. (肯定回答) No, they wer
8、ent. (否定回答),一般过去时一般疑问句及其肯否定回答练习题,They had a good time in the park. 一般疑问句： Did they have a good time in the park? 肯定/否定回答： Yes, they did. No , they didnt.,2. Ann did her homework yesterday evening. 一般疑问句： Did Ann do her homework yesterday evening? 肯定/否定回答： Yes, she did. No, she didnt.,3. I read an En
9、glish book last week. 一般疑问句： Did you read an English book last week? 肯定/否定回答： Yes, I did. No, I didnt.,4. My brother was in the park just now. 一般疑问句： Was your brother in the park just now? 肯定/否定回答： Yes, he was. No, he wasnt.,一般过去时练习题,Her father _ (read) a newspaper last night. We _(go) to the zoo ye
10、sterday. _ you _ (visit) your relatives last Spring Festival? _ he _ (fly) a kite on Sunday? Yes, he _. It _ (be) Bens birthday last Friday. We all _ (have) a good time last night. He _ (live) in Wuxi two years ago. The cat _ (eat) a bird last night.,read,went,Did,visit,was,had,lived,ate,Did,fly,did,