何为陈述句？ 陈述或者表达某个事实或状态。 （He is a student. I' m a doctor. The door is open. It is a beautiful city . She likes to swim . I like playing football. He works in a hospital . ) 何为一般疑问句？ 要用YES 或者 NO 回答的问句。通常以系 动词或情态动词或助动词开头。(Are you a orstudent ? Is he a doctor ? Can I go to school on foot ? )
系动词：小学阶段只需注意be动词（am, is ,are 及其对应的过去式was were。) 助动词：do , dose 及对应的过去式did。 情态动词：can \ shall \ will \ may 对应过去 式 could \ should \ would \ might 等。
? 1 句中有be动词或情态动词的情况，直接 将句中的be动词或情态动词提前，若有 需要应在人称和数上发生相应变化。 ? a: 人称和数不变化 He is a student. Is he a student ? The door is open. Is the door open ?
? ⑴先将be动词或情态动词提前，⑵考虑人 称是否变化。 I'm a student. Am I a student ? 错错！ 我是一个学生吗？ 是不是学生自己知道，所以问句不成立， 变问句是别人问所以人称发生变化。 此时人称发生变化，数也发生变化。正确 应为： Are you a student ?
? I can go to school on foot . ⑴先将be动词或情态动词提前 Can I go to school on foot ? ⑵考虑人称是否变化。 Can you go to school on foot ? 在将陈述句 变一般疑问句时此时才完整。
如不是在陈述句变疑问句过程中，此句Can I go to school on foot , linda? 也正确。
? I will go to Beijing this weekend . ? Will you go to Beijing this weekend ?
? She is a nurse . ? Is she a nurse ? ? They are my parent . ? Are they your parent ? ? He is my father . ? Is he your father ?
? 当陈述句中无be动词及情态动词时，根据句中 人称选用助动词，此时助动词置于句首，并注 意人称及动词的数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，主语为第三人称或单数时用does。 ? I like playing football. ? Do you like playing football ?
I have a pet dog . Do you have a pet dog ? I go to school on foot . Do you go to school on foot ?
? 主语为第三人称时选用助动词does,此时谓语动 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 ?
? ? ? ? ? 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 ?
1、He is a singer . 2、I have an english book . 3、
She can go to school by bike . 4、They are my friend. 5、She wants to be a singer in the future . 6、He likes to swim in the river . 7、He is my friend . 8、She is a farmer in the farm .