陈述句变成疑问句(课堂PPT).ppt

陈述句变成一般疑问句  学习重点：掌握陈述句变成一 般疑问句规律学习难点：学会陈述句变成一般疑问句的运用 什么是陈述句？ 什么是一般疑问句？ 陈述句及一般疑问句的简单定义 陈述句： 陈述或者表达某个事实或状态。 eg:1.He is a student. 2.The door is open. 一般疑问句: 要用Yes 或者 No 回答的问句。通常以be动词或情态动词或助动词开头。( Is he a doctor ? Can I go to school on foot ? Do you like apple?) be动词、情态动词、助动词 be动词{am is are} 过去式（ was were） 情态动词：can \ shall \ will \ 过去式 could \ should \ would \ 等。 助动词：do , dose 及对应的过去式did。 陈述句变成一般疑问句规律 第一 类 找be动词 1 找be 动词，提到句首并大写。 2 后面的照写，（注意人称的变化） 3 句末有问号。 a :1. He is a student. Is he a student ? 2.The door is open. Is the door open ? 练习 1.She is a nurse . Is she a nurse ? 2.They are my parent . Are they your parent ? 3.He is my father . Is he your father ? 4.I am a teacher. Are you a teacher? b:人称发生变化. ⑴先将be动词提前，⑵考虑人称是否变化。 I'm a student. Am I a student ? 我是一个学生吗？ 此时人称发生变化，数也发生变化。正确应为： Are you a student ? 陈述句变成一般疑问句规律第二类 找情态动词 步骤： 1 找情态动词，提到句首并大写。 2 后面的照写，（注意人称的变化） 3 句末有问号。 She can speak English. Can she speak English ? 练习 They can play ping--pong . Can they play ping--pong ? I can do the dishes . Can you do the dishes ? 陈述句变成一般疑问句规律第三类 加助动词 用于当陈述句中无be动词及情态动词时， 注意：人称及动词有时也需要发生的变化。 ⑴助动词的选用,主语为第一、二人称或复数 时用do， （2）主语为第三人称或单数时用does。 （3）句子是过去式时，用did I like playing football. Do you like playing football ? 例句： I have a dog . Do you have a dog ? I go to school on foot . Do you go to school on foot ? (2)、主语为第三人称时需注意 主语为第三人称时选用助动词does,此时动词部分发生相应变化。 She likes to swim . Does she like to swim ? He works in a hospital . Does he work in a hospital ? 例句： She has a pair of beautiful eyes . Does she have a pair of beautiful eyes? He teaches math in a school . Does he teach math in a school ?