做单句改错题首先要读通句子，在此基础上，根据不同的情况，用所掌握的语法、词汇知识为标准，具体排除干扰，判断、找出错误，予以改正。
一、有些句子学生十分熟悉，根据所学知识，一眼就可识破，则不必顾及其他。如 :
I must try my best learn English well.
try one’s best后应跟不定式。故在 best后应加“to”。
二、有些题目要从时态、语态、语气或主谓一致等方面来判断。如 :
1. We have studied most of Book by the end of last week.
by后跟表示过去的时间状语时，对应的时态该用过去完成时，因此，该句中have应改为 had。
2. Those novels wrote by Lu Xun 60 years ago.
句中 wrote应改为 were written。因为 these novels是动作的承受者。
三、有些题目要从动词的用法，词组搭配以及用词的知识方面考虑。如 :
—Where’s the boy student？
—He has been to the library.
句中 has been to表示“去过某地，已回来”，而这里的男同学显然没回来，所以该处需改为“has gone to”。
四、越来越多的辨认错误题，综合了尽可能多的语法、词汇知识，因而同学们不能只从某项语法或词汇用法方面去判断，更应从各方面来判断错误的可能性。如 :
He broke the window when he was playing football and he paid of the glass the next day.
这一句不但要考虑broke、paid是否正确，而且要判断football, next day前是否有定冠词，更要核对“paid of”的准确性，因为 of与 for较相似，故此句paid of应改为paid for。
经典范例引路
例1 Lily has reached home three hours ago.
简析 :可将 has reached改为reached，即一般过去时。另一种改法是将句尾的three hours ago去掉，因涉及到不止一个选项，故在此题中不能这么改。
例2 You can’t get across when the lights are green.
简析 :此题语法上并没有错，只是不符合事实，应将D项的 green改为red，才符合“红灯停，绿灯行”的交通规则。
例 3 Don’t get into the gate before they tell you do that.
简析 :tell后接不定式作宾语补足语，即tell sb. to do sth，其中的to不可省略。
【综合能力训练】
Ⅰ. 下列各题有一处是错的，请将出并将改正后的词写在句后的括号内。
( )1. There is going to have much beef on the plate. ( )
( )2. I don’t think his dress is dearer than Kate. ( )
( )3. I can’t hear you. Could you speak it louder ? ( )
( )4. It’s kind for you to help me to do the cleaning. ( )
( )5. Mr Black, a good friend of me, likes drawing horses. ( )
( )6. Don’t stay at home. You had better to go out for a walk, ( )
( )7. In the girls’ 100-metre race, Lily from Class 1 ran very fastly. ( )
( )8. There is a people in the room. But nobody knows who it is. ( )
( )9. We will hold a sports meeting next Monday if it won’t rain. ( )
( )10. The boy called Tom was born in the morning of May 2nd, 1990. ( )
( )11. Mother asked me if the Blacks were going to move here long before.
( )12.Today is September the tenth. Happy Teachers’ Day to you. Thank you for teach us so well. ( )
( )13. Jim is much cleverer than any other students in Grade 3, but he doesn’t work hard. ( )
( )14. Look !Two hundreds students are watching a football match on the playground. ( )
Ⅱ. 改正下列句子，每句只有一个错误，在错的地方作出标记，并将改正后的词写在句后的横线上。
1. Have you gone to America before？
2. Is there new anything in this talk？
3. Neither Ann nor I are a League member.
4. We are surprise that he lost the game.
5. Most great artists like making own train.
6. Hurry up，and you won’t catch the train.
7. I think this song is most popular of all.
8. Mr Hu got up until ten o’clock yesterday.
9. What a interesting book !Do you like it ?
10. This story is not so longer as that one.
11. It’s a long time since we have met last.
12. What’s wrong with you ?You look unhappily.
13. Mrs Smith found that difficult to study English well.
14. There is little water in the glass, isn’t there ?
15. The boys were playing with fire when he comes in.
16. The traffic accident was happened around the corner last week.
17. Please show we the picture that you drew yesterday.
18. Mr Li wants the students do their homework by themselves.
[参考答案]
综合能力训练
Ⅰ. 1. have→be 2. Kate→Kate's 3. it→去掉 4.for→of 5. me→mine 6. to go→go 7. fastly→fast 8. a people→aperson 9. won't→doesn't 10. in →on 11. long before→before long 12. teach→teaching 13. students→student 14. hundreds→hundred
Ⅱ. 1. gone→been 2. new anything→anything new 3. are→am 4. surprise→surprised 5. own→their own 6. and→or 7. most→the most 8. got→didn't get或until→at 9. a→an 10. longer→long 11. have met→met 12. unhappily→unhappy 13. that→it 14. isn't→is 15. comes→came 16. was happened→happened 17. we→us 18. do→to do
