七年级英语怎样句型转换
在七年级的英语中,句型转换也是一个重要知识,那么七年级英语怎样句型转换呢?下面是学习啦小编为你整理的七年级英语句型转换的方法,希望大家喜欢!
七年级英语句型转换的方法
单数句与复数句相互改写
将句子改为复数句或单数句的关键是“牵一发而动全身”,要注意人称代词和物主代词的单复数的相互转化,动词的原形和第三人称单数的相互转化,名词以及量词的单复数的相互转化。这就要求同学们对相关知识要熟练掌握。
例如:She has a tennis racket. 改成复数句为:They have some tennis rackets.。由此能够看出主语变了,其后的动词也变了,一个网球拍变成了一些网球拍。Those are backpacks.改成单数句为:That is a backpack.。
改为一般疑问句
将陈述句改为一般疑问句分两种情况。第一种是句子中含有be动词(常见的有am,is,are)。这种情况只需把be动词提到句首,将句号变为问号即可。特别注意:如果陈述句中主语是第一人称的I,那么在变为一般疑问句时将其变为第二人称,同时其所对应的be动词也要跟着改变。例如:I am a teacher.变为一般疑问句应该为Are you a teacher?。
第二种情况是句子中不含be动词。在这类陈述句中要借助于do 或does,do和does 的选择是根据句子主语的人称和数来定的:
(1)当主语为第三人称单数形式或不可数名词的时候,用does;
(2)主语为第一人称、第二人称,以及表示复数意义的词做主语时,用do。
(3)另外还可以根据陈述句中的动词是否为第三人称单数形式来判断。例如:1) Tim has a good watch.变为一般疑问句为Does Tim have a good watch? 2) Tom and Jerry like playing football 变为一般疑问句为 Do Tom and Jerry like playing basketball?
一些题目要求改写句子之后做相应的回答,只要一般疑问句改写正确之后,相应的回答也就迎刃而解了。
肯定句与否定句相互改写
肯定句的改写和否定句的改写是一个互逆的过程。改写为否定句,要看句子中是否有be动词。有be动词的,在be动词后加not;没有be动词的,在动词前加don’t 或doesn’t。don’t 和doesn’t的选择与一般疑问句中do或does 的选择方法是相同的。切记,如果动词前用了doesn’t,那么这个动词不能要从三单形式变为原形。例如: Mary likes healthy food. 变为否定句为 Mary doesn’t like healthy food.。
改为肯定句的时候,要注意把doesn’t去掉之后动词要变成第三人称单数形式。例如:Tony doesn’t like vegetables.变为肯定句为 Tony likes vegetables.。
对划线部分进行提问
对划线部分提问这类题型最重要的是确定特殊疑问词,由此我们也就知道对划线部分提问其实就是把所给句子变成特殊疑问句(特殊疑问词+一般疑问句)。
我们目前经常用到的特殊疑问词有:what(对事物提问)、why(对原因提问)、who(对人提问)、when(对时间提问)、how(对状况和方式提问)、how old(对年龄提问)、how much(对价格提问)、where(对地点提问)。准确把握划线部分所对应的特殊疑问词之后,再加上一般疑问句形式,这种题型就解决了。
例如:My favorite subject is science.(对划线部分提问),science 属于事物,所以特殊疑问词确定为what;原句变为一般疑问句之后为Is your favorite subject science?,What替代了science放到句子最前面,最终变为What is your favorite subject?。
同义句改写
同义句的改写其实就是同样的意思用不同的方式来表达。例如:My favorite subject is math. 它的同义句为I like math best. 注意:Someone’s favorite ….. is ….. 与….like….best 进行同义转换的时候要注意选择上义词。例如:He likes ice cream best. 同义替换为 His favorite food is ice cream.
合并句子
合并句子的实质就是概括句子。例如:This is my father. This is my mother. 在这两个句子中,这个加这个就是这些,mother和father就是父母,所以将这两句话合并到一起就是These are my parents. 另外一个例子: She is my daughter. He is my son 这两句话合并到一起就是 They are my children.
英语句型转换学习方法
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。
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.
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 ?
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.
句型转换的口诀
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?