否定句、疑问句总结.docx

句型转换：一般疑问句、否定句的变化规律要点精析 一、陈述句该为一般疑问句或是否定句的变化规律1. 当句中有be动词(am,is are)时，改成否定句时，在be动词后加not;改成一般疑问句时，把 be动词提前放于句首例子：I am from China.I am not from China.Are you from China?小试牛刀：We are going to go shopping this weekend.Paris is the capital of France.2. 当句子中有情态动词时，改成否定句，在情态动词后加not；改成一般疑问句时，把情态动词 放到句首例子：You should go to school on time.You shouldn't go to school on time.Should I go to school on time?小试牛刀：I would like to go swimming after school.We must clean the classroom now.小学阶段接触的情态动词有：can , must , should, would, could , need , may (情态动词的后面接动词原形)3. 当句中既没有be动词又没有情态动词时，这时候就要使用到助动词。

改成否定句，根据时态 或者人称在动词前面加上doesn't，don't，didn't；改成一般疑问句，根据时态，人称，使用助 动词does,do ,did放在句首温馨提示：（1） •一般现在时态且主语是第三人称单数的情况下使用:改为一般疑问句用does，改为否定句就 用 doesn't.（2） •一般现在时态而且主语为非第三人称单数的情况下使用：改为一般疑问句用do,改为否定 句就用don't.（3） •—般过去时态情况下使用：改为一般疑问句用did,改为否定句就用didn't.例子：My mother likes dancingMy mother doesn't like dancing.Does your like dancing?小试牛刀：The boy plays basketball well.My father goes to the Baiyun Hill very often.所有doesn't， don't, didn't， does,do ,did后面的动词都接原形特别提醒：1•遇到第三人称和第二人称不需要变人称（当句子中有情态动词如must, can, could, should，need 等时，需将第二人称改为第一人称。

其他情况不用变例子： l.She is good at English.Is she good at English?2. You are students.Are you students？3. You should finish your homework first.Should I finish my homework first?2遇到第一人称时，应将第一人称改为第二人称才可以I am f Are you ; My father is —Is your father; We are—Are you; ）实战演练：l. There are some old bridges over the river.（改 成一般疑问句）2.1 would like to have some milk.（改成一般疑问句）3. They often go to the library on the weekend.（改成一般疑问句）4. My friend go to school on foot.（改为否定句）5.1 am going to do my homework tomorrow.（改成一般疑问句）6. Please read Lesson One.（改为否定句） Lesson One, please.7. Jackie has lunch at school.（改为一般疑问句） Jackie lunch at school ?8. They go to bed early.（改为一般疑问句） they to bed early?9. Mike does well in English.（改为否定句）Mike well in English.10. u Hai and Su Yang look the same.（改 为一般疑问句） Su Hai and Su Yang the same?11. They studied at Guangzhou International school.（改 为一般疑问句） they at Guangzhou International school?12. There is some water in the bottle.（改 为一般疑问句） there water in the bottle?2•用情态动词的情况下有特殊情况。

1）用must问的情况Must I come here before 9:00.Yes, you must .No, you needn't 或是 No, you don't have to.（2）用may问的情况May I smoke in the room?Yes, you may.或是 Of course,you may.No,you may not/musn't/can't.或是 You'd better not/I'd rather you didn't./Please don't.（3）用need的情况Need I finish it today?Yes, you must/have/should（肯定句不能用Yes ,you need.因为need只使用于否定句或是疑问句中 No,you needn't/don't have to.（4） 用could问的情况Could（Can）you...?Yes,I can （不用 could）（5） 用shall问的情况Shall I/she/ he...?No, you（she,he） needn't/can't/mustn't实战演练：一、对下面的句子作肯定回答和否定回答l.Is the boy in white T-shirt your brother?2. Are your parents work in the same place?3. Does the girl go to school on foot everyday?4. Does the cat like eating fish?5. Are there any milk in the bottle？6. Must we borrow books with an ID card?二、改写句子1. Chen Fei is always late for school.（改为否定句）Chen Fei is late for class.2. Mike did his homework at school.（改为否定句）Mike his homework at school.3. She found some apples in the fridge.（改为一般疑问） she apples in the fridge?4. He will be away for long next year.改为否定句）He be away for long next year.5. You had better tell him the news.（改为否定句）You had better him the news.6. David usually plays football at school.（改为一般疑问，并作否定回答）7. Turn off the radio, please.（改为否定句） turn off the radio, please.8. We need some masks.改成否定句）9. The boy is standing on the man's shoulders.（改 为一般疑问句）10. Su Hai and Su Yang live in a new house.（改为一般疑问句，并作肯定否定回答）11.1 put a book on my head.（改成否定句）12. They are singing in the classroom .（改成一般疑问句）13. We play basketball on Sundays.改成一般疑问句）14. Tom likes listening to music （改成否定句）15. The girl is singing in the classroom.（改为一般疑问句，并作肯定回答）。