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一、肯定句改否定句的方法 ：

1、 在be动词后加not。如：is not ， are not ， am not， was not， were not;

2、 在can，should， will等后加not。如：cannot， should not， will not;

3、 上述都没有的，在动词前加助动词否定形式don’t/doesn’t/didn’t。

4、 some 改成any。

如： I am a girl. → I am not a girl.

You are a student. →You are not a student.

→You aren’t a student.

This is Tom’s bag, → This is not Tom’s bag.

→ This isn’t Tom’s bag.

答题方法是;否定词not在be后边。

二、肯定句改一般疑问句的方法：

1、 把be动词放在句首，剩下的照抄，(some 改成any，I改成you，my改成your，)句点改成问号。

2、 把can，shall， will等放到句首，剩下的照抄，(some 改成any，I改成you，my改成your，)句点改成问号。

3、 上述都没有的，在句首请助动词Do/Does/Did帮忙，剩下的照抄，(some 改成any，I改成you，my改成your，)句点改成问号。

注意：句首的第一个字母要大写，句尾标点应为“?”。

如：

I am in Class 6. →Are you in Class 6?

You are from America. →Are you from America?

It is an orange. →Is it an orange?

答题方法是：要想提问，be提前，句末“?”别忘了。

4、 就一般疑问句回答

一般疑问句有两种回答，即：肯定回答和否定回答。其中，肯定回答用yes,否定回答用no。 语句顺序为：Yes + 主语 + am /is/ are/was/were.|can.|do/does/did|; No + 主语+ am not/ isn’t/ aren’t/wasn't/weren't.|can't.|don't/doesn't/didn't|.。如：

—Are you an English teacher?→Yes, I am. /No, I am not.

—Is that a bird? →Yes, it is./ No, it isn’t.

三、对划线部分提问

“就划线部分提问”是小学阶段英语学习的难点，但是一旦掌握了规律，就变得容易多了。 小学英语对划线部分提问之答题口诀 ：

一代：用正确的疑问词代替划线部分。

二移：把疑问词移至句首

三倒：颠倒主谓语，但对主语或其定语提问时除外(some 改成any，I改成you，my改成your)，

四抄：照抄句子剩余部分。

☆总结关键就是：“特殊疑问词+一般疑问句”(即： 先根据划线部分找到特殊疑问词; 再把没划线的部分变成一般疑问句的语序。)

★特殊疑问词的确定要根据划线内容而定,在小学阶段常出现的有以下几种：

1.划线部分是“事或物”，特殊疑问词用what

如: This is a book.

---What is this?

I often play football on Saturdays .

---What do you often do on Saturdays ?

2.划线部分是“人”，特殊疑问词用who

如:He is my brother. ---Who is he ?

3、划线部分是“地点”，特殊疑问词用where

如:The box is on the desk.---Where is the box ?

4、划线部分是“时间”，特殊疑问词用what time或when

如:It's seven twenty . ---What time is it ?

I usually get up at six . --- When do you usually get up?

5、划线部分是“年龄”，特殊疑问词用how old

如:I am twelve . ---How old are you?

My father is thirty-three . ---How old is your father ?

6、划线部分是“职业”，特殊疑问词用what

如:Mike is a worker. ---What is Mike ?

7、划线部分是“颜色”，特殊疑问词用what colour

如: My hat is blue . ---What colour is your hat?

8. 划线部分是“数量”，特殊疑问词用how many或how much

如:I can see five kites .---How many kites can you see ?

There is some milk in the glass. ---How much milk is there in the glass ?

9、划线部分是“多少钱”，特殊疑问词用how much

如:This pen is nine yuan . ---How much is this pen ?

10、划线部分是“形容词性物主代词或名词性物主代词”，特殊疑问词用whose　　如:That is my book . ---Whose book is that ?

The bag is yours. ---Whose is the bag ?

以下口诀要牢记：

1.问“谁”用who;

2.问“谁的”，用whose;

3.问“地点哪里”，用where;

4.问“原因”，用why;

5.问“身体状况”，用how;

6.问“方式”，用how;

7.问“年龄”，用how old;

8.问“多少”，用how many;

9.问"价钱”用how much;

10.问“哪一个”，用which ;

11.问“什么”，用what;

12.问“职业”，用what;

13.问“颜色”，用what colour;

14.问“星期”，用what day;

15.问什么学科，用what subject;

16.问“什么时候”，用when;

17.问几点用What’s the time?或 What time is it?

四、同义句型转换

同义句型转换，是把意思相同或相近的句子用不同的词汇、短语及句型表示出来。如：

I’m Peter. → My name is Peter.

Tom is tall. →Tom isn’t short.

I‘m fine. →I'm all right.

我们现在学过的大多数句型，在一般情况下(就是不排除有特殊情况)都可以用简单的公式来记忆。

1.肯定句变否定句

1) 主语+be动词+….

*I am a teacher.→ I am not a teacher.

He is a doctor. → He is not a doctor.

They are students. →They’re not students.

2) 主语+do动词的不同形式+….

I play computer games everyday. →I don’t play computer games everyday.

He plays computer games everyday. →He doesn’t play computer games everyday

We played computer games yesterday.→ We didn’t play computer games everyday

2肯定句变一般疑问句

1)问：be动词+主语+…?

答：Yes, 主语+be动词。/No, 主语+be动词+not.

I am a teacher. →Are you a teacher?

Yes, I am. No, I am not.

He is a doctor.→ Is he a doctor?

Yes, he is. No, he is not.

They are students. →Are they students?

Yes, they are. No, they are not.

2) 问：助动词+主语+do动词的原形+…?

答：Yes, 主语+助动词。/No, 主语+助动词+not.

I play computer games everyday.

→Do you play computer games everyday? Yes, I do. No, I don’t.

He plays computer games everyday.

→Does he play computer games everyday? Yes, he does. No, he doesn’t.

We played computer games yesterday.

→Did you play computer games yesterday? Yes, we did. No, we didn’t.

以上就是精品学习网推荐的小学英语语法小结，希望对大家的学习有所帮助!

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