初中英语语法肯定句、否定句一般疑问句课件.ppt

1、肯定句、否定句和一般疑问句肯定句、否定句和一般疑问句 下页下页?I am a teacher.I like apples.Have a look?I am not a teacher.I donlike apples.t?Is this your handbag?Yes,it is.No,it is not.Do you like apples?Yes,I do.No,I do not.Conclusion?陈述句：陈述句：用于说明一个事实或表达用于说明一个事实或表达说话人的看法或观点的句子。说话人的看法或观点的句子。?陈述句陈述句分为分为肯定句肯定句和和否定句否定句。?肯定句表示肯定的意义；

2、肯定句表示肯定的意义；I am a teacher.I like apples.首页首页 上页上页 下页下页 否定句否定句表示否定意义，句中表示否定意义，句中有否定词有否定词not,never等，表等，表示示“不不”的意思。的意思。I am not a teacher.I dont like apples.?结构为：结构为：?肯定句：主语肯定句：主语do,will和和have/+be情态动词情态动词动词动词/助动词助动词+其他其他?否定句：主语否定句：主语do,will和和have/+be情态动词情态动词动词动词/助动词助动词+not+其他其他 肯定句和否定句之间的转换肯定句和否定句之间的转换

3、?1.如果肯定句中有如果肯定句中有be动词（动词（am,is,are,was,were）、助动词）、助动词will和和have,或情态动词（或情态动词（can,could,must等），只需在等），只需在be动词、助动词动词、助动词will，do和和have或情态动词之后加或情态动词之后加not即可得到相应的否定句即可得到相应的否定句。For example 首页首页 上页上页 下页下页?My father is a taxi driver.?There are some apples on the 肯定句和否定句之间的转换肯定句和否定句之间的转换 table.?She was a stude

4、nt two years ago.首页首页 上页上页 下页下页 1.He can play football very well.2.Mary will come to China next week.3.I have finished my homework.?2.如果句子中没有如果句子中没有be动词、助动词动词、助动词will和和have或情态动词，则需要借助助或情态动词，则需要借助助动词动词do,does或或did，并将，并将not放在它放在它们后面，并将句中实义动词变为原形。们后面，并将句中实义动词变为原形。?注意：注意：do,does,did后后面必须使用动词原形。面必须使用动词原形

5、。For example 首页首页 上页上页 下页下页?I like listening to pop music.?He goes to work every morning.?Linda drove to school last night.More Examples 首页首页 上页上页 下页下页 一般疑问句的基本结构：一般疑问句的基本结构：be动动词词/助动词助动词/情态动词情态动词+主语主语+谓语谓语/表语表语+其他？其他？Yes,主语主语+be动词动词/助动词助动词/情态情态动词动词 No,主语主语+be动词动词/助动词助动词/情态动情态动词词+not 肯定句和一般疑问句之间的转换肯

6、定句和一般疑问句之间的转换?1.如果肯定句中有如果肯定句中有be动词（动词（am,is,are,was,were）、助动词）、助动词will和和have,或情态动词（或情态动词（can,could,must,等），只需将等），只需将be动词、助动词动词、助动词或情态动词提前至句首，其余内容照或情态动词提前至句首，其余内容照抄下来，改末尾句号为问号即可。抄下来，改末尾句号为问号即可。For example 首页首页 上页上页 下页下页 肯定句和一般疑问句之间的转换肯定句和一般疑问句之间的转换?My father is a taxi driver.?She can play Chinese che

7、ss very well.?Mary will come to China next week.?There are some apples on the table.首页首页 上页上页 下页下页?2.如果句子中没有助动词如果句子中没有助动词be动词、动词、助动词助动词will和和have或情态动词，则需要或情态动词，则需要借助助动词借助助动词do,does或或did，将它们放，将它们放在句首，并将句中实义动词变为原形。在句首，并将句中实义动词变为原形。For example 首页首页 上页上页 下页下页?I like listening to pop music.He goes to wor

8、k every morning.Linda drove to school last night.注意：注意：do,does,did后面必须使用后面必须使用动词原形。动词原形。首页首页 上页上页 下页下页 More Examples?将下列句子变为否定句 1.The dog is bigger than the cat.2.My English teacher speaks English very fast.3.He can eat three hamburgers at a time.首页首页 上页上页 下页下页?4.Susie found some money on her way to

9、 school.?5.My father is very hard-working.首页首页 上页上页 下页下页?6.Grandpa tells stories to us every evening.?7.They were talking loudly at 10:00 p.m.yesterday.?8.I can do my homework fast.?9.He ate too much at the party.首页首页 上页上页 下页下页?10.He doesnt live in London with his uncle.11.There is some water in the

10、 cup.?12.I read books every day.?13.Peter goes to the zoo once a year.?.首页首页 上页上页 下页下页?将下列句子变成一般疑问句?1.He took many photos in front of the Summer Palace._ he _ many photos in front of the Summer Palace?2.The Earth moves around the Sun._the Earth _around the Sun?3.There are many supermarkets in the city._ _ _supermarkets in the city?首页首页 上页上页 下页下页 4.We must send him to the hospital at once._we _him to the hospital at once?5.Tom usually gets up at 11:00 a.m.on Sundays.6.I wrote a letter to my uncle the day before yesterday.首页首页 上页上页 下页下页