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第13讲 句型转换
· 知识精讲
知识点 1 陈述句
一、肯定句:是指用肯定的语气来陈述的句子,如:
I’m a student.
She is a doctor.
He will eat lunch at 12:00.
He can play basketball.
He works in a hospital.
There are four fans in our classroom.
二、否定句
肯定句改否定句的方法
1.有be动词的,在be动词后加not。如:is not, are not, am not;
2.有情态动词的,在情态动词后加not,如:can not, should not, will not;
3.上述都没有的,即实义动词类的,在实义动词前加助动词否定形式don’t/doesn’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.)
注意:祈使句的否定有两种:
1. 直接在句首加don’t.
Close the window. → Don’t close the window.
2. 句首加No,动词变ing。(一般翻译成禁止做某事)
No smoking! 禁止抽烟!
No parking! 禁止停车!
知识点 2 一般疑问句
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,)句号改成问号。
2.把can, will等放到句首,剩下的照抄,(some 改成any,I改成you,my改成your)句号改成问号。
3.上述都没有的,在句首请助动词Do/Does帮忙,剩下的照抄,注意遇到第三人称单数时,谓语动词要还原成原形,(some 改成any,I改成you,my改成your,)句号改成问号。
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?
He can sing. → Can he sing?
My father likes reading newspapers. (报纸)→ Does your father like reading newspaper?
4.一般疑问句的回答
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; No + 主语+ am not/ isn’t/ aren’t/ can't/ don’t/doesn’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.
Does he like English? → Yes, he does. / No, he doesn’t.
针对性练习
一、将下列句子改成一般疑问句:并做肯定回答和否定回答。
1.It is a lovely dog. ________________________________________________
Yes,___________ No,____________
2. They are Lily’s cousins. ___________________________________________
Yes,___________ No,____________
3. We are classmates. _______________________________________________
Yes,___________ No,____________
4. There is a bird in the tree. _____________________