小学英语语法：陈述句变一般疑问句

1、Welcome to English class.,欢迎进入英语直播间,课前准备 课前准备：笔，本， 四年级下册英语书,陈述句变一般疑问句,中文解释什么是一般疑问句,1.你吃饭了吗？ 肯定回答： 2.他睡觉了吗？ 否定回答： 3.他们吃苹果吗？ 肯定回答： 4.你今天有课外作业吗？ 肯定回答： 5.你玩的开心吗？ 否定回答： 6.我能吃冰激凌吗？ 肯定回答：,是的，我吃了,不，他没睡,是的，他们吃,是的，我有,不，我不开心,是的，你能,如果有人问你，你今年是九岁吗，你会怎么回答？ 你一定会说，是或者不是。 这种只回答“是”或者“不是”的问句，在英语就叫做一般疑问句。,一般疑问句,陈述句变一般疑

2、问句，要分几种情况？,1）含有am ,is, are(be动词） 2）含有情态动词can,will,must,should 3）没有be动词和情态动词的,1）含有am ,is, are的陈述句变 一般疑问句,肯定句,It is a bag.,一般疑问句,Is it a bag?,That is a pen.,Is that a pen?,Jim is six.,Is Jim six?,Yes, it is.,No, it isnt.,肯定回答,否定回答,Yes, it is.,No, it isnt.,肯定回答,否定回答,Yes, he is.,No, he isnt.,肯定回答,否定回答,肯

3、定句,They are kind.,一般疑问句,Are they kind?,I am happy.,Are you happy?,We are friends.,Are you friend?,肯定回答：,否定回答：,Yes, they are.,No, they arent.,Yes, I am.,No, I am not.,Yes, we are.,No, we arent.,口诀：一提二换三照抄 一提：将be动词提到句首； 二换：将第一人称换成第二人称； 三照抄：陈述句剩下的都照抄,1. I am from Canada. _ _ from Canada? 肯定回答：_, _ 否定回答

4、：_, _ 2. She is looking for her dog. _ she _ for her dog? 肯定回答：_, _ 否定回答：_, _,Are you,Yes I am,No I m not,Is,looking,Yes she is,No she isnt,肯定句,一般疑问句 肯回， 否回,1. I am tall.,_,2. We are strong.,_,3. This is a ship.,_,_,4. Sam is a dog.,_,5. Jim and Mary are sad.,Yes , I am. No, I am not.,Are you strong

5、?,Yes , we are. No, we arent.,Is this a ship?,Yes , it is. No, it isnt.,Is Sam a dog?,Yes , it is. No, it isnt.,Are Jim and May sad?,Yes , they are. No, they arent.,Welcome to English class.,欢迎进入英语直播间,陈述句变一般疑问句,陈述句变一般疑问句，要分几种情况？,1）含有am ,is, are(be动词） 2）含有情态动词can,will,must,should 3）没有be动词和情态动词的,1）含有a

6、m ,is, are的陈述句变 一般疑问句,把am,is,are提到句子开头，剩下照抄，末尾变问号。,肯定句,一般疑问句,1. This is a ruler.,_,2. Xu Chang is in grade 4.,_,3. They are reading books.,_,_,4. I am tired.,Yes , it is. No, it isnt.,Is this a ruler?,Is Xu Chang in grade 4 ?,Yes , she is . No, she isnt.,Are they reading books ?,Yes , they are. No,

7、they arent.,Are you tired?,Yes , I am. No, Im not.,2）含有情态动词can,will,must,should,把情态动词提到句子开头，剩下照抄，末尾变问号。,肯定句,I can swim.,一般疑问句,Can you swim?,Tom can skate.,Can Tom skate?,肯定回答：,否定回答：,Yes, I can.,No, I cant.,肯定回答：,否定回答：,Yes, he can.,No, he cant.,They can ride.,Can they ride?,肯定回答：,否定回答：,Yes, they can.

8、,No, they cant.,口诀：一提二换三照抄 一提：将情态动词提到句首； 二换：将第一人称换成第二人称； 三照抄：陈述句剩下的都照抄,例1: I can sing songs. Step1由情态动词引导的一般疑问句: Can Step2: Can you Step3: Can you sing songs?,肯定句,一般疑问句 肯回， 否回,1. Sam can swim.,_,2. Mary can skip.,_,3. They will go shopping.,_,_,4. I can dance.,Yes , he can. No, he cant.,Can Sam swim

9、?,Can Mary skip?,Yes , she can. No, she cant.,Will they go shopping?,Yes , they will. No, they wont.,Can you dance?,Yes , I can. No, I cant.,如何将一个肯定的陈述句改为一般疑问句,秘诀一：找be动词或情态动词,看句中有无be动词或情态动词，如有，把be动词或情态动词提到句首即可。,如果原句子没有be动词也没有情态动词， 怎么办？,陈述句变一般疑问句，要分几种情况？,3）没有be动词和情态动词的,助动词（ do/does） + 主语 + 动词原形 + 其它？

10、,不管用哪种秘诀，都不要忘记在句子最后打上哦！,秘诀二：请助动词来帮忙,即在句子前加助动词do或does来构成一般疑问句,例：John likes summer best.,John like summer best?,打回原形,Does,例：They like fruit.,Do,they like fruit?,肯定句,I like salad.,一般疑问句,Do you like salad?,We like running.,Do you like running?,肯定回答：,否定回答：,Yes, I do.,No, I dont.,肯定回答：,否定回答：,Yes, we do.,N

11、o, we dont.,They like apples.,Do they like apples?,肯定回答：,否定回答：,Yes, they do.,No, they dont.,(do),(do),(do),肯定句,He reads books every day.,一般疑问句,Does he read books every day ?,She likes swimming.,Does she like swimming?,肯定回答：,否定回答：,Yes, he does.,No, he doesnt.,肯定回答：,否定回答：,Yes, she does.,No, she doesnt

12、.,(does),(does),口诀：一选二提三换四照抄 一选：根据陈述句动词时态选择助动词； 二提：将选好的助动词提到句首； 三换：第一人称换第二人称, 动词换回原形。 四照抄: 陈述句剩余部分照抄,例1: I like eating apples. Step1: like是动词原形，故选do Step2: do Step3: do you like(I 变you) Step4: do you like eating apples?,例3: He loves his mother. Step1: loves是第三人称单数，故选does Step2: does Step3: does he l

13、ove (loves 变原形love) Step4: does he love his mother?,肯定句,一般疑问句 肯回， 否回,1. I like singing.,_,2. We like reading.,_,3.They like fish.,_,_,Yes , I do. No, I dont.,Do you like singing?,Do you like reading?,Yes , we do. No, we dont.,Do they like fish?,Yes , they do. No, they dont.,Does Mary like meat?,Yes

14、,she does. No, she doesnt.,4. Mary likes meat.,归 纳:,肯定句 一般疑问句句 1.be动词 把be动词提前 2.Can等情态动词 把can 提前 3.没有be和情态动词 把助动词do（does）提前,More practice,His mother is a teacher. _ The cat can catch a mouse._ They can swim. _ I like to read English. _ He can sing a song. _ She likes to eat cake. _ They are in the park. _ She is in Beijing