八年级英语上册Unit2KeepingHealthyTopic1YoushouldbrushyourteethtwiceadaySectionC一般过去时的知识点课件新版仁爱版

1、unit 2 keeping healthy topic 1 you should brush your teeth twice a day section c-一般过去时的知识点一般过去时动词变过去式pastnowfuture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、一般在动词末尾加 ed look walkpaintplay cleanvisitwantcoughwatch look ed walked painted played cleaned visited wanted coughed wat

2、ched 2、结尾是、结尾是 e 的动词只加的动词只加 - d live hope uselived hoped used 3.重读闭音节词，重读闭音节词， 先先双写双写这个辅音字母，再加这个辅音字母，再加ed stoppatstoppedpatted 4. 以以“辅音字母辅音字母+y”结尾的词，结尾的词， 先变先变“y”为为“i”再加再加ed study worryearlyhappystudyied worryiedearlyiedhappyied不规则动词过去式的构成1.过去式与原形一样letlet（让）（让）putput (放下）放下）cut cut（砍，剪）（砍，剪） readrea

3、d（读）（读）2.把元音字母变成“a”come camegive gavebecome becamedrink drankbegin began剩余不规则动词剩余不规则动词表剩余不规则动词表infinitive past tense am, is are do go havemake 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状态 的句子中在was, were的后面加上not。如：

4、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：

5、 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 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

6、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) no, he wasnt. (否定回答)一般过去时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 th