小学英语语法（4）——肯定、否定、疑问
肯定句、否定句、一般疑问句与特殊疑问句
1、肯定句：是指用肯定的语气来陈述的句子，如：
I’m a student.
She can swim.
He works in a hospital.
There are four fans in our classroom..
2、否定句：含有否定词或表示否定意义词的句子，如：
I’m not a student.
She can’t swim.
He does not (doesn’t) work in a hospital.
There are not (aren’t) four fans in our classroom.
☆注意小结：
变否定，be,情，助动后not 添
be 动词(am , is , are , was , were)
情态动词(can, must , should 常用)
助动词(do , does , did , will -- (have got 中的have) )
3、一般疑问句：是指询问事实的句子，此类句子必须用“yes”，或“no”来回答。
Are you a student? Yes, I am / No, I’m not.
Can she swim? Yes, she can. / No, she can’t.
Does he work in a hospital? Yes, he does. / No, he doesn’t.
Are there four fans in our classroom? Yes, there are. / No, there aren’t.
☆注意小结：
一提，二改，三变号
一. be动词， 情态动词， 助动词往前提
二. 改变大小写
三. 变问号
助动词后动词用原形
回答：用什么提问，用什么回答
插播 some 用于肯定句，any 用于否定句，疑问句
但是： some 用于表示“请求、邀请或希望得到肯定的回答”的疑问句中。
——Would you like some coffee?请喝咖啡。（表示请求、邀请）
4、特殊疑问句：以特殊疑问词（what , where , who , which , when , whose , why , how等）开头引导的句子。此类句子应该问什么就答什么，不能用“yes 、no”来回答。如：
What is this? It’s a computer.
Where are you going? I’m going to Beijing.
What does he do? He’s a doctor.
Which season do you like best? Summer.
Who played football with you yesterday afternoon? Mike.
Why do you like spring best? Because I can plant trees.
I usually get up at 6:30. When do you usually get up?
I went to Xinjiang by train. How did you go to Xinjiang?
He’s going to swim . What is he going to do ?
She likes reading . What does she like doing ?
☆注意小结：划线部分提问变法
一替，二改，三变号
一. 特殊疑问词替代划线部分
二.余下内容改为一般疑问句(注意句子时态)
三.变问号
特殊疑问词
what 什么
where 哪里
who 谁
whose 谁的
when 什么时候
how 怎样
which 哪一个
what time 什么时候
what colour 什么颜色
what language 什么语言
what subject 什么科目
what class 什么班
what day 星期几
what date 日期
how many 多少
how much 多少钱
how often 多经常
how long 多长时间
how old 多大
how tall 多高
how heavy 多重
why 为什么