句型专项--肯定句和否定句（课件）-2023-2024学年通用版英语六年级下册

by Clair 句型专项之陈述句 定义 句型区分 练习巩固 句型分类 句型转换 目 录 陈述句定义 陈述句含义 陈述一个事实或说话人的看法的句型，叫陈述句。 陈述句分类 陈述句分类 肯定（陈述）句 否定（陈述）句 句型区分 句型区分 肯定陈述句 从句子结构来看，可以简单理解为就是没有用否定副词 (比如not)去修饰谓语动词的句子。 否定陈述句 从句子结构来看，可以简单理解为就是使用否定副词（比如：not, never, hardly, scarcely等等）修饰谓语动词的句子。 总而言之，进行肯定句否定句区分，主要判断句子中是否有否定词：not、no、never等存在，有则为否定句，无则为肯定句。 区分 例子 Mary doesn’t like sweet food. Hellen is an foreigher. Those pretty toys are so expensive. Pets are never allowed to come in here. 否定句 肯定句 肯定句 否定句 句型转换 句型转换 肯定句转否定句 句型转换 句中有be有can, 直接在其后面加上not. 1、Bob and Dan are twins. Bob and Dan are not twins. 2、He is tall and strong. He is not tall and strong. 3、Cats can climb the trees. Cats can not climb the trees. 4、We can do it well. We can not do it well. 句型转换 句中没be没can, 借do/does,再加not. 1、They run fast. They do not run fast. 2、Molly likes stars. Molly doesn’t like stars. 3、Her sisters go to school. Her sisters do not go to school. 4、The bird fly away. The bird does not fly away. 句型转换 否定句转肯定句 句型转换 句中有be+not有can+not, 直接去掉not,其他不变. 1、They aren’t my children. They are my children. 2、Luora can’t swim . Luora can swim . 3、This isn’t a real mouse. This is a real mouse. 4、Dan’s father can’t paint . Dan’s father can paint . 句型转换 句中有do+not有does+not, 直接去掉don’t 或doesn’t，谓语根据主语进行变化. 一、当主语是第一、二人称单复数、第三人称复数，谓语不变。 1、They don’t swim well . They swim well . 2、You don’t work hard. You work hard. 3、Min and Li don’t get up. Min and Li get up. 句型转换 句中有do+not有does+not, 直接去掉don’t 或doesn’t，谓语根据主语进行变化. 一、当主语是第三人称单数，谓语变化。 1、Lee doesn’t swim well . Lee swims well . 2、Yuki doesn’t work hard. Yuki works hard. 3、This cat doesn’t sleep. This cat sleeps. 练习巩固 练习巩固 一、请将下列肯定句改为否定句 1、Sarah is a helpful girl. ___________________________________________________________ 2、Mike is very happy to play with his friend.___________________________________________________________ 3、There are many books on the bookshelf.___________________________________________________________ Sarah is not a helpful girl. Mike is not very happy to play with