小升初英语通用版第2讲句型之间的转换课件
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第三章 句型
第 讲 句型之间的转换
2
在英语中,各句子的句式在一定条件下可以相互转换,小学阶段我们需要了解以下三种情况。
2020小升初专题复习 通用版
第三章 句型
考点一
常见肯定句变否定句
情况
变化结构
例句
句中有be动词时
be 动词+not
She is a police officer.
她是警察。
→She isn’t a police officer.
她不是警察。
句中有情态动词时,如“can, may, must, will, should”等
情态动词+not
You should go home now.
你现在应该回家。
→You shouldn‘t go home now. 你现在不应该回家。
句中无be动词、情态动词时
在原句动词前加助动词“don’t/doesn't/didn't”,后面加动词原形
He likes swimming.
他喜欢游泳。
→ He doesn't like swimming.
他不喜欢游泳。
第三章 句型
变否定,找“be”或“can”,找到“be”“can”后接“not”;无“be”无“can”找动词,动词时态要看清,动词前加“don't/doesn't/didn't”,后面动词用原形。
【示例】 把肯定句改为否定句。
Lily speaks English very well.
_____________________________
Lily doesn't speak English very well.
第三章 句型
(2019安徽安庆)He went to school yesterday.
(改为否定句)
He to school yesterday.
didn't go
第三章 句型
考点二
陈述句变一般疑问句
用法
例句
有be动词、情态动词时,把它们提到前面
I will go to Beijing next week.
下周我将要去北京。
→Will you go to Beijing next week?
下周你将要去北京吗?
无be动词或情态动词时,以助动词“do, does”或“did”开头,原来的动词变为动词原形
They went to the park on Sunday.
他们星期日去公园了。
→Did they go to the park on Sunday?
他们星期日去公园了吗?
第三章 句型
变一般疑问句,也要找“be”或“can”,
找到“be, can”要提前,句尾问号莫要忘;
无“be”无“can”借用“do/does/did”,
放到句首要大写,后面动词用原形。
第三章 句型
【示例】 改为一般疑问句。
This is my toy car.
__________________
Is this your toy car?
第三章 句型
改为一般疑问句并作肯定和否定回答。
The boy can ride a bike now.
__________________________________
__________________________________
Can the boy ride a bike now?
Yes, he can. No,he can't.
第三章 句型
考点三
常见陈述句变一般疑问句
陈述句变特殊疑问句时,要根据回答选用相应的疑问词或词组,后面再跟一般疑问句句式。不同的提问所用的疑问词不同。(见下表)
第三章 句型
疑问词或词组
用法
例句
what
提问事物、
事件等
I cleaned my room last weekend. →What did you do last weekend?
what colour
提问颜色
My bag is blue.
→What colour is your bag?
when/what time
提问时间
It’s half past eight. →What time is it?
what day
提问星期几
It’s Monday.→What day is it today?
what size
提问尺码
My shirt is size M.
→What size is your shirt?
why
提问原因
I was late for school again because my alarm clock didn’t work.
→Why were you late for school again?
where
提问地点
My father is going to Changsha next week. →Where is your father going next week?
第三章 句型
which
提问选择
I like this blue dress.
→Which dress do you like?
who
提问人
She is my sister. →Who is she?
whose
提问主人
That is my shirt.
→Whose shirt is that?
how
提问方式
I go to school on foot.
How do you go to school?
how much
提问价格
This book is ten yuan.
→How much is this book?
how many/much
提问数量
I can see five birds.
→How many birds can you see?There is some tea in the cup. →How much tea is there in the cup?
how long
提问长度/时间
The desk is 1.5 metres long.
→ How long is the desk?
续表
第三章 句型
how often
提问频率
She is late for school once a week.
→ How often is she late for school?
how far
提问距离
It's 300 metres from my home to school.
→ How far is it from your home to school?
how big
提问多大
The apple is as big as a baseball.
→How big is the apple?
how tall
提问身高
My brother is 1.75 m tall.
→How tall is your brother?
how heavy
提问体重
My sister is 42 kg.
→How heavy is your sister?
续表
第三章 句型
变特殊疑问句,先把原句变一般,找准特殊疑问词,放到句首并大写;画线部分要去掉,动词词组do代替,时态人称要注意。
【示例】 对画线部分提问。
The children are flying kites in the park.
_____________________________________
Where are the children flying kites?
第三章 句型
(2019安徽安庆)对画线部分提问。
1.I'm 1.78 metres tall.
are you?
2.I am watching TV now?
are you now?
How tall
What doing
第三章 句型
【示例1】 ( ) nice weather it is!
A.What B.How
C.How a D.What a
【精析】此句为感叹句。“weather”为不可数名词,意为“天气”,因此可排除选项C和D。再根据“what”和“how”引导感叹句的结构: What+形容词+不可数名词+主语+谓语!How+形容词/副词+主语+谓语!可以排除选项B。
【答案】A
A
第三章 句型
【针对性练习1】
( ) tall boy he is!
A.What B.How C.What a
C
第三章 句型
【示例2】
( )— is the school from the park??
—It's about three kilometres away.
A.How much B.How far C.How long
【精析】题目意思为“学校离公园有多远?”“how much”用来提问“多少,多少钱”;“how long”用来提问“多长”;“how far”用来提问“多远”。因此选项A和C都可排除。
【答案】B
B
第三章 句型
【针对性练习2】
( )— is it today?
—It's Monday.
A.What B.What day C.What date
B
第三章 句型
【示例3】 He does his homework in the
afternoon. (改为否定句)
He his homework in the afternoon.?
【精析】阅读题干,句子中没有be动词和情态动词且是一般现在时态,因此变否定句时,必须要加助动词“don't”或“doesn't”;主语“he”是第三人称单数,因此只能用“doesn't”,其后要加动词原形,即“does”要还原为“do”。注意千万不要在原题中的“does”后面直接加“not”,因为这里的“does”是实义动词“做”,不是助动词。
【答案】doesn't do
doesn't do
第三章 句型
【针对性练习3】
Ben (do) have any brothers or sisters. (填入单词的适当形式)?
doesn't
谢谢
21世纪教育网（www.21cnjy.com) 中小学教育资源网站
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详情请看：
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第 讲 句型之间的转换
2
在英语中,各句子的句式在一定条件下可以相互转换,小学阶段我们需要了解以下三种情况。
2020小升初专题复习 通用版
第三章 句型
考点一
常见肯定句变否定句
情况
变化结构
例句
句中有be动词时
be 动词+not
She is a police officer.
她是警察。
→She isn’t a police officer.
她不是警察。
句中有情态动词时,如“can, may, must, will, should”等
情态动词+not
You should go home now.
你现在应该回家。
→You shouldn‘t go home now. 你现在不应该回家。
句中无be动词、情态动词时
在原句动词前加助动词“don’t/doesn't/didn't”,后面加动词原形
He likes swimming.
他喜欢游泳。
→ He doesn't like swimming.
他不喜欢游泳。
第三章 句型
变否定,找“be”或“can”,找到“be”“can”后接“not”;无“be”无“can”找动词,动词时态要看清,动词前加“don't/doesn't/didn't”,后面动词用原形。
【示例】 把肯定句改为否定句。
Lily speaks English very well.
_____________________________
Lily doesn't speak English very well.
第三章 句型
(2019安徽安庆)He went to school yesterday.
(改为否定句)
He to school yesterday.
didn't go
第三章 句型
考点二
陈述句变一般疑问句
用法
例句
有be动词、情态动词时,把它们提到前面
I will go to Beijing next week.
下周我将要去北京。
→Will you go to Beijing next week?
下周你将要去北京吗?
无be动词或情态动词时,以助动词“do, does”或“did”开头,原来的动词变为动词原形
They went to the park on Sunday.
他们星期日去公园了。
→Did they go to the park on Sunday?
他们星期日去公园了吗?
第三章 句型
变一般疑问句,也要找“be”或“can”,
找到“be, can”要提前,句尾问号莫要忘;
无“be”无“can”借用“do/does/did”,
放到句首要大写,后面动词用原形。
第三章 句型
【示例】 改为一般疑问句。
This is my toy car.
__________________
Is this your toy car?
第三章 句型
改为一般疑问句并作肯定和否定回答。
The boy can ride a bike now.
__________________________________
__________________________________
Can the boy ride a bike now?
Yes, he can. No,he can't.
第三章 句型
考点三
常见陈述句变一般疑问句
陈述句变特殊疑问句时,要根据回答选用相应的疑问词或词组,后面再跟一般疑问句句式。不同的提问所用的疑问词不同。(见下表)
第三章 句型
疑问词或词组
用法
例句
what
提问事物、
事件等
I cleaned my room last weekend. →What did you do last weekend?
what colour
提问颜色
My bag is blue.
→What colour is your bag?
when/what time
提问时间
It’s half past eight. →What time is it?
what day
提问星期几
It’s Monday.→What day is it today?
what size
提问尺码
My shirt is size M.
→What size is your shirt?
why
提问原因
I was late for school again because my alarm clock didn’t work.
→Why were you late for school again?
where
提问地点
My father is going to Changsha next week. →Where is your father going next week?
第三章 句型
which
提问选择
I like this blue dress.
→Which dress do you like?
who
提问人
She is my sister. →Who is she?
whose
提问主人
That is my shirt.
→Whose shirt is that?
how
提问方式
I go to school on foot.
How do you go to school?
how much
提问价格
This book is ten yuan.
→How much is this book?
how many/much
提问数量
I can see five birds.
→How many birds can you see?There is some tea in the cup. →How much tea is there in the cup?
how long
提问长度/时间
The desk is 1.5 metres long.
→ How long is the desk?
续表
第三章 句型
how often
提问频率
She is late for school once a week.
→ How often is she late for school?
how far
提问距离
It's 300 metres from my home to school.
→ How far is it from your home to school?
how big
提问多大
The apple is as big as a baseball.
→How big is the apple?
how tall
提问身高
My brother is 1.75 m tall.
→How tall is your brother?
how heavy
提问体重
My sister is 42 kg.
→How heavy is your sister?
续表
第三章 句型
变特殊疑问句,先把原句变一般,找准特殊疑问词,放到句首并大写;画线部分要去掉,动词词组do代替,时态人称要注意。
【示例】 对画线部分提问。
The children are flying kites in the park.
_____________________________________
Where are the children flying kites?
第三章 句型
(2019安徽安庆)对画线部分提问。
1.I'm 1.78 metres tall.
are you?
2.I am watching TV now?
are you now?
How tall
What doing
第三章 句型
【示例1】 ( ) nice weather it is!
A.What B.How
C.How a D.What a
【精析】此句为感叹句。“weather”为不可数名词,意为“天气”,因此可排除选项C和D。再根据“what”和“how”引导感叹句的结构: What+形容词+不可数名词+主语+谓语!How+形容词/副词+主语+谓语!可以排除选项B。
【答案】A
A
第三章 句型
【针对性练习1】
( ) tall boy he is!
A.What B.How C.What a
C
第三章 句型
【示例2】
( )— is the school from the park??
—It's about three kilometres away.
A.How much B.How far C.How long
【精析】题目意思为“学校离公园有多远?”“how much”用来提问“多少,多少钱”;“how long”用来提问“多长”;“how far”用来提问“多远”。因此选项A和C都可排除。
【答案】B
B
第三章 句型
【针对性练习2】
( )— is it today?
—It's Monday.
A.What B.What day C.What date
B
第三章 句型
【示例3】 He does his homework in the
afternoon. (改为否定句)
He his homework in the afternoon.?
【精析】阅读题干,句子中没有be动词和情态动词且是一般现在时态,因此变否定句时,必须要加助动词“don't”或“doesn't”;主语“he”是第三人称单数,因此只能用“doesn't”,其后要加动词原形,即“does”要还原为“do”。注意千万不要在原题中的“does”后面直接加“not”,因为这里的“does”是实义动词“做”,不是助动词。
【答案】doesn't do
doesn't do
第三章 句型
【针对性练习3】
Ben (do) have any brothers or sisters. (填入单词的适当形式)?
doesn't
谢谢
21世纪教育网（www.21cnjy.com) 中小学教育资源网站
有大把高质量资料？一线教师？一线教研员？
欢迎加入21世纪教育网教师合作团队！！月薪过万不是梦！！
详情请看：
https://www.21cnjy.com/help/help_extract.php