2018年外研版(一起)小学三年级英语(下册)期末考试题
2017-2018学年小学英语三年级（下）期末测试卷
听力部分（60分）
Ⅰ.听音，圈出你听到的单词。
（本题共10小题，每小题1分，共10分）
1. laugh lazy
2. future fruit
3. helpful holiday
4. fifty fifteen
5. another astronaut
6. loud London
7. police parrot 8. report remember
9. Thursday Tuesday 10. week work
Ⅱ.听音，用数字(1,2,3,4,5)给图片排序。
（本题共5小题，每小题2分，共10分）
（）（）（）（）（）
Ⅲ.听音，判断下列图片正确的写“T”错误的写“F”。
（本题共5小题，每小题2分，共10分）
1（） 2（） 3（） 4（） 5 （）
Ⅳ.听音,选择单词补充句子,将其序号填在括号里（本题共5小题，每小题2分，共10分）A. beautiful B. policeman C. vegetables D. Thursday E. different
( ) 1. Solomon Grundy will dance on .
( ) 2. Now it is long. It’s !
( ) 3. You’re not a _________, Sam !
( ) 4. Was it _______ in your class in English?
( ) 5. Where are the ________ ? I don’t know.
Ⅴ.听音，选出你听到的句子，将其序号填在括号里。
（共5小题，每小题2分，共10分）( )1. A. Fifty plus twenty is seventy. B. Thirty plus twenty is fifty.
( )2. A. We have got more friends here in China. B. He’s got a present for his friend. ( )3. A. This little boy can’t do his Science. B. This little boy can’t do his Chinese. ( )4. A . I’ll visit my grandpa in the countryside. B. I’ll go swimming with my grandpa. ( )5. A. What day is after Tuesday? B. What day is after Thursday?
Ⅵ.听音用数字(1,2,3,4,5)给句子排序。
（本题共5小题，每小题2分，共10分）( ) I’ll pick peaches with my grandpa.
( ) I’ll go to a fruit farm.
( ) I’ll visit my grandpa this weekend.
( ) Peaches are my favourite fruit!
( ) I’ll see lots of pigs there.
笔答部分（40分）
Ⅶ.默写26个英文字母。
（13分）
Ⅷ.根据语境写出单词。
(本题共6小题，每空1分，共7分）
1. This is Big Ben. It’s a very old c .
2. They haven’t got o at this fruit farm.
3. Will you p me? No, I won’t.
4. We’ll see lions t and pandas.
5. She runs f at PE.
6. This is Maomao. She is nice. But she’s a bit s .
7. I’ll go to the second f now.
Ⅸ.选择填空，将序号填在括号里。
（共10小题，每题0.5分，共5分）
( )1. Look at the ____ on these trees! A. peach B. peaches ( )2. What’s ten plus ten? _______ ! A. Twenty B. twelve ( )3. How many _______ are there in your class? A. child B. children ( )4. That’s good idea!. A. a B. an
( )5. _______ the holidays, Mum and Amy were in London. A. On B. In
( )6. My hair wasn’t long then. It was very ________. A. old B. short ( )7.She is good at English. A. quite B. quiet ( )8.Will we pick pears? No, we . A. won’t B. will ( )9.What will you be, Daming? A . A. football B. footballer ( )10. This little girl can’t do her Maths. I’m going to help . A. him B. her
Ⅹ.根据问句选答句，将序号填在前面的括号里。
（本题共5小题，每小题1分，共5分）( ) 1.Were you at farm yesterday? A. He lives in the countryside.
( ) 2.Where does Daming’s grandpa live? B. I don’t know. They were here last week. ( ) 3.What will you be? C. It’s ninety.
( ) 4.Where are the vegetables? D. I will be a nurse.
( ) 5.What’s sixty plus thirty? E. Yes, I was.
Ⅺ.根据句意，选择正确的词语填空，将其序号填在括号内。
（每小题1分，共5分）
( ) 1. Will you ? Yes, I will.
( ) 2. Lingling doesn’t at Art.
( ) 3. I want to visit London. I’ll see___________.
( ) 4. Sam football.
( ) 5. There are forty children ________ .
Ⅻ.阅读理解。
（本题共5小题，每小题1分，共5分）
（一）根据短文内容选择正确答案,将序号填入括号内。
（每题1分，共2分）
Look at the picture. There is a monkey in it. A hat is on his head. A pear is on his left hand. A banana is on his right hand. A big apple is in his mouth. There are two birds in the picture.There is a tall tree near his bike.
（）1. A big is in his mouth. A. banana B. apple
（）2. There is near his bike. A. an apple tree B. a tall tree
（二）根据短文内容判断正误，正确的写“T”，错误的写“F”。
（每小题1分，共3分）I have three good friends. They are Lili, Xiaoqiang and Fangfang. Lili is short and loud. But she is helpful. She always helps people. Xiaoqiang is lazy and naughty. He can’t do his Science. But he can play football very well. Fangfang is clever and happy. She works hard. Her parents are very happy with her work. But she can’t sing very well. We always help each other.
（）1. I have three good friends. They are Lili, Xiaoqiang and Fengfeng.
（）2. Xiaoqiang can play football very well.
（）3. Lili’s parents are very happy with her work.。
外研版(一起)三年级英语(下册)期末检测题及答案
外研版（一起）三年级英语(下册)期末检测题及答案题序一二三四五六七八总分得分（满分：100分时间：60分钟）一、从下列每组单词中选出不同类的一项。
（10分）1、（）A．brother B．mother C．student2．（）A．nine B．fine C．fifteen3．（）A．teacher B．Canada C．China4．（）A．big B．bag C．small5．（）A．boy B．girl C．friend二、根据图片提示，将下列单词补充完整。
（10分）1.___onkey2.___oodles3.___range4.___anana5.___acket6.___irl三、选择正确答案。
（20分）1、—Have some eggs. ( )—____________A．Yes, it is. B．Thanks. C．Bye.2、—Is it under your desk? ( )—________A．Yes, it is. B．Yes, it isn’t. C．Yes, I do.3、—This is my friend Helen. ( )—________A．Hello, I’m Helen. B．Hello, Helen. C．Goodbye, Helen.4、—Let’s go to the classroom. ( )—_______A．OK. B．Me too. C．Yes. Look! 5、—Here’s your present. ( )—______.A．Hello B．I’m fine C．Thank you6、Welcome back ______ school. ( )A．in B．on C．to7、I’d like some milk _____ rice. ( )A．and B．at C．to8、—How old are you? ( )—_______A．I’m ten. B．It’s ten. C．You’re ten.9、What _________ this? ( )A．am B．are C．is10、—_______ this, Zhou Hua? ( )—It’s a pig.A．What’s B．How’s C．Who’s四、将句子与对应的汉语意思连线。
外研版(一起)三年级英语下册期末考试题(通用)
外研版（一起）三年级英语下册期末考试题（通用）题序一二三四五六七八总分得分（满分：100分时间：60分钟）一、从下列每组单词中选出不同类的一项。
（10分）1、（）A．ruler B．bye C．book2．（）A．have B．red C．yellow3．（）A．colour B．pencil C．crayon4．（）A．black B．blue C．eraser5．（）A．hi B．bag C．hello二、根据图片提示，将下列单词补充完整。
（10分）1．___ift 2．___ace 3．___ce cream4．___gg 5．___and三、选择正确答案。
（20分）1、Welcome back _________ school. ( )A．to B．for C．in2、—This is my friend Helen. ( )—________A．Hello, I’m Helen. B．Hello, Helen. C．Goodbye, Helen.3、—____________ ( )—I’m five years old.A．How old are you? B．How are you? C．How many bags?4、I have _______ ruler and _______ eraser. ( )A．a; a B．an; an C．a; an5、I’d like some milk _____ rice. ( )A．and B．at C．to6、______! What can you hear? ( )A．Listen B．Look C．Taste7、—Do you like eggs? ( )—________A．No, I don’t. B．Yes, I don’t. C．No, I am not. 8、What _________ this? ( )A．am B．are C．is9、Our teacher’s office is on the ______ floor. ( ) A．one B．two C．third 10、—Where are you from? ( )—________A．I’m from USA．B．I’m from the uk. C．I’m from the U.K.四、读一读，请给句子选出合适的答语并连线。
2018-2019学年外研版三年级下册英语期末练习题(含答案)
期末英语笔试试卷一. 写出下面字母对应的大小写。
( 10分）D hf rM QB eI k二.选出正确的单词填在横线上。
（15分）1.There are fifty ___________(peach/peaches) .2.She is quite good_________(at/in)English.3.You’ll _________(see/sees)Tower Bridge.4.Today is Tuesday, tomorrow is __________(Thursday/Wednesday).5.He will go swimming ______(on/at) Sunday.三.选择。
( 30分）( ) 1.What will you see?A. Maybe I’ll be a writer.B. I like apple.C. You’ll see Tower Bridge.( ) 2.Is Daming naughty in class?A.Yes, he does.B.No, he isn’t.C. No, he doesn’t.( ) 3.The London Eye is from___________.A.BeijingB.AmericaC.London( ) 4.How many children are there in your class?A.There are sixty.B.There is sixty.C.It is sixty.( )5..What's forty plus forty?A.It's ninety.B.It's eighty.C.It's thirty.( )6. She is very nice.But she's______shy.A. goodB. naughtyC. a bit( )7.He________hard.A. workB. worksC. clever( )8.Were you on the second floor?A.Yes,we were.B.Yes,I amC.Yes,I do. ( )9.Tomorrow is 星期五.A.Children’s DayB. Sports DayC. Friday ( )10.Will you go swimming tomorrow?A No, I will.B No, I won't. C. Yes, I won’t. ( )11. Yesterday , it________there.A. isB. wasC. are ()12. The Tower Bridge is_________.A. wideB. newC. round( )13.She always helps people, she is very____.A.niceB.naughtyC. Shy( )14 “Parents’Day”的汉语意思是：_______ A．放暑假的日子 B. 开学的日子C. 开家长会的日子( )15.The river is very wide.And it’s very long.It’s the______________.A.London EyeB.River Thames.C. Big Ben 四。
最新外研版2018年三年级下册英语期末试卷及答案
最新外研版2018年三年级下册英语期末试卷及答案Class:Name:2017-2018 academic year second semester Grade 3 English final exam Answer time: 60 minutesListening n (50 points in total)Ⅰ。
Listen and circle the word you hear。
(10 ns in total。
1 point for each n。
10 points in total)stzy3.then4.helpful5.holiday6.another7.about8.tea9.parent 10.parrotⅡ。
Listen and use numbers (1.2.3.4.5) to sort the pictures。
(5 ns in total。
2 points for each n。
10 points in total)1) (4) (2) (5) (3)Ⅲ。
Listen and judge whether the following pictures are correct or not。
Write "T" for correct and "F" for incorrect。
(5 ns in total。
2 points for each n。
10 points in total)T) (F) (T) (F) (T)Ⅵ。
Listen and choose the sentence you hear。
and fill in the bracket with its number。
(5 ns in total。
2 points for each n。
10 points in total)1) A。
We have got more friends here in China.2) B。
外研版2018—2019学年度小学三年级英语下册期末试题及答案
外研版2018—2019学年度第二学期小学三年级英语下册期末试卷及答案听力部分（共40分）一、听录音，选择你所听到的单词，每个单词读两遍。
（10分）( ) 1. A. bird B. leg C. ear( ) 2. A. arm B. eleven C. name( ) 3. A. hello B. here C. hand( ) 4. A. pencil B. cap C. please ( ) 5. A. thank B. black C. chair二、听录音，选出与所听内容相符的图片，每个句子读两遍。
（10分）() 1. A.B.C.() 2. A.B.C.() 3. A.B.C.() 4. A.B.C.() 5. A.B.C.三、听录音，给下列图片排序，每个句子读两遍。
（10分）A B C D E1. ________2. ________3. ________4. ________5. ________四、听录音，选出正确的答语，每个问题读两遍。
（10分）( ) 1. A. I’m Lili. B. Three.( ) 2. A. Thank you. B. It’s a pen.( ) 3. A. No, it isn’t. B. I’m fine too.( ) 4. A. Now it’s red. B. It’s on the desk.( ) 5. A. Yes, it is. B. He is a boy.笔试部分（共60分）一、请按顺序写出26个英文字母，包括大小写。
书写要规范。
（10分）二、将每组单词中不同类别的词找出来，将序号填写在括号内。
（5分）( ) 1. A. head B. green C. red D. black ( ) 2. A. desk B. chair C. blackboard D. cat( ) 3. A. book B. nine C. pen D. pencil ( ) 4. A. doctor B. farmer C. brother D. driver ( ) 5. A. arm B. door C. leg D. eye三、根据句意选择合适的单词，把序号填在括号中。
外研版2018—2019学年度小学三年级英语下册期末试题及答案
外研版2018—2019学年度小学三年级英语下册期末试卷及答案听力部分（40分）一、听录音，选择你所听到的单词。
（10分） ( ) 1. A. TVB. PE ( ) 2. A. hotB. nice ( ) 3. A. fish B. box ( ) 4. A. Chinese B. science ( ) 5. A. tiger B. lion二、听录音，选择与所听到相符的图片。
（10分）( ) 1. A. B.( ) 2. A. B.( ) 3. A. B.( ) 4. A. B.( ) 5. A. B.三、听录音，按所听到的顺序用数字1-5给下列句子排序。
（10分）( ) It’s the ABC song! ( ) Here is a red hat. ( ) I like football. ( ) Hello! I am Sam. ( ) Has Amy got a bike?四、听录音，选出你所听到的句子，每个句子读两遍。
（10分） () 1. A. Good morning, Amy. B. Bye-bye, Amy. ( ) 2. A. He is six. B. She is eight. ( ) 3. A. That’s me.B. That’s my grandma. ( ) 4. A. It’s on the book. B. It’s in the classroom. ( ) 5. A. The door is blue.B. The desk is green.笔试部分（55分）一、根据图片选择相应的单词。
（5分）() 1. A. shoes() 2. B. TV() 3. C. baby() 4. D. sunny() 5. E. sweater二、单项选择，选择正确的回答。
（10分）( ) 1. Thank you ________ my teachers.A. toB. in( ) 2. —What’s your favourite ________? —I like spring.A. songB. season( ) 3. Sam ________ like bananas. He likes pears.A. isn’tB. doesn’t( ) 4. It’s warm today, ________ it’s raining.A. andB. but( ) 5. —Where is my toy? —It’s ________ your bedroom.A. inB. on 三、看图，选择与图片意思相符的句子或单词。
外研版（一起）三年级下册英语期末考试
外研版（一起）三年级下册英语期末考试外研版（一起）三年级英语下册期末考试一、把下列单词补充完整。
10%1.ma e (做)2. r m (房间)3. h t (热)4. pl (演奏.踢球)5.th se (这些)6.f_ _ it(水果)7 B.th se (那些) 8. yes_ _ _ day( 昨天)9 B.w k ( 工作) 10. s_ _(说)11 B.ch_ _sti_ _s(筷子) 12. sec_ _ _(第二)13 B. na_ _ _ ty( 淘气的) 14. w_d_(宽的)15 B. l_ _ _(狮子)二、根据提示写出单词。
10%1.We like . (快餐)2.Lingling are (用) chopsticks.3.What are (你) doing? I’m working.4.We’re making a . (蛋糕)5. He _______(总是) helps people.6 B.Can you (跑) fast? No, I can’t.7.How many ________ (桃子) are there?8B. There are stone ________ .(动物)9.She is ________ (美丽的)10 B. I’ m eating hamburgers and ______. (薯条)11. Will you _______ （打电话）me? Yes, I _______( 将要)12.B.What are you going to do ? I’m going to (游泳) in the .（大海）三、请为下列问句找到对应的答句，把序号写在前面的括号里。
20%( )1.Do you use chopsticks in England? A. They’re dragon boats. ( )2.Do you want noodles? B. No, we don’t.( )3.What are you eating? C. Yes, please.( )4.What’s Sam doing? D. I’m eating a hambu rger. ( )5.What’s Amy doing? E. He’s listening to the radio.( )6.Will you go to the zoo? F. She’s playing the drums. ( )6 B.What are those? G.I am going to be a driver. ( )7.What’s ten plus ten? H.No, he can’t.( )7 B.what are you going to do? I. Yes, I can.( )8.Were you on the first floor? J.I’m going to play football.( )8 B.Can you run fast? K.Twenty( )9.How many apples are there? L. Yes, I will.( )9 B.Can Sam sing songs? M. No, I wasn’t.( )10.Will he swim? N. Yes, he will( )10 B.What are you going to be? O. There are 9 apples.四、选择填空 20%( ) 1. It’s for English people to use chopsticks.A. hardB. easy( )2. It’s for Chinese people to use chopsticks.A. hardB. easy( )3. These __ Sam ' s trousers.A. isB. areC. am( )4. In China, we use ___.A. chopsticksB. a knife and fork( )5. I ___ using chopsticks .A. isB. areC. am( )6.This is ___dress.A. AmyB. Amy’sC. amy’s( )7.We are making a cake ___ mum.A.ofB.onC.for( )8. Look ____ the mess!A. onB. inC. at( )9.There _____ five people in my family.A isB areC am( )10.Sam _____ got a pen.A hasB isC have( )11. _____ you at the farm yesterday?A WereB wereC Are( )11 B. Will you go____ ?A. swiming B swim C swimming( )12. What day is after Sunday? It’s _____.A SaturdayB MondayC Friday( )12 B. My grandpa _____ in Dalian.A livesB livingC liveing( )13. Where are the vegetables? _______ are there.A ItB TheyC Then( )13 B. What are you going to do ____ Friday?A inB atC on( )14. Were you ____ the second floor?A onB atC in( )14 B. My mum is _____ a cake.A. makes B making C makeing( )15. Will he ____ TV ?A watchingB watchesC watch( )15 B. Look! There are some stone ______.A animalB animalsC animal’s( )16. They _____ old then.A wereB was Care( )16 B. I’m going to _____ a pilot.A isB amC be( )17. _____ 70 plus 90?A When’sB What’sC Where’s( )17 B. She has got _____ old bag.A aB twoC an( )18. Amy is good _____ English.A inB aboutC at( )18 B. ______ is the new book? It’s in my bag.A WhatB whereC Where( )19. Will Lingling eat a pizza?A Yes, he will.B No, she doesn’t. C. Yes, she will.( )19B.Can I play _____ your kite?A withB toC from( )20. I’m going to help _____.A himB heC she( )20 B. They can _____ basketball.A playsB playingC play五、按要求写句子。
2018年新外研版英语三年级下册期末测试卷及答案
2018年新外研版英语三年级下册期末测试卷及答案2017-2018学年小学三年级英语下册期末测试题时间：60分钟总分：100分听力部分（52分）一、选出你所听到的单词。
10分1.A。
cat2.B。
cool3.A。
new4.B。
bag5.A。
all6.C。
sunny7.A。
like8.C。
not9.B。
toy 10.A。
bed二、听音选出你所听单词的反义词或对应词。
6分1.B。
thin2.B。
hot3.A。
under4.A。
open5.A。
small6.B。
short三、根据你听到的句子顺序，给图片编上序号。
10分1.（3）2.（2）3.（5）4.（1）5.（4）四、听问句选答语。
16分1.B。
It’s the ABC song。
2.A。
It’s a monkey。
3.B。
No。
he doesn’t。
4.B。
I have Music。
5.B。
Yes。
she has。
6.A。
It’sin the box。
7.A。
No。
it isn’t。
8.A。
No。
she doesn’t.五、听音，判断所听句子与图片是否相符，相符的写“T”，不相符的写“F”。
10分1.T2.F3.T4.F5.T六、听音排序。
5分It is a sunny and hot day today。
Tom is a two-year-old toddler。
Does Sam enjoy eating pears。
Personally。
I am notXXX spring。
with XXX.一、选择与图片相应的词或词组，把编号填在相应图片下面的括号内。
（10分）C )( G )( A )( E )A、watch TVB、riceC、walkD、nE、XXX二、找出不同类的单词。
6分1.A。
summer B。
bedroom C。
autumn（C）2.A。
play B。
goes C。
has（B）XXX（B）4.A。
XXX（）5.A。
Sunday B。
外研版2017-2018学年小学三年级英语下学期期末考试试题(含答案)
2017-2018学年外研版小学三年级英语下学期期末测试题（30分钟）一、选择题A找出不同类的单词，将其序号填在题前的括号里（）1. A.Monday B. spring C. sunday（）2. A. Music B. eat C. do（）3. A.shirt B. sleep C. shoe（）4. A. sweater B. orange C. white（）5. A.football B. open C. watchB将正确答案的序号填在题前的括号里（）6. Her mother to work .A.walkB. walksC. is walk（）7. They go skating winter in Harbin.A. inB. onC.at（）8. We go swimming_____ summer. A. about B. does C. in（）9. It’s hot and ______ today. A. sunny B. sun C. suny （）10. The dog is the tree. A. on B. in C. under （）11. Sam a new sweater?A. Has, gotB. Do, gotC. Have, got（）12. Mr Wang got a car.He goes to work by bus.A. hasB. hasn’tC. haven’t二、根据小写字母的书写格式，写出占下两格和占上两格的字母的小写形式三、写出下列短语的汉语意思1. fly kites2.go skating3. in winter4.on Sunday5. two years old6. on the phone7.in the lake8. in the box9.behind the door 10. my toy 11.in the park 12. at home 13. put on 14. go swimming15. come back16. in the bedroom 17. go fishing四、根据情景选择正确的答案（）1. 你想问艾米：“玲玲有一条蓝色的裙子吗？”应该这样问：A．Have Lingling got a blue skirt ?B. Has Lingling got a blue skirt ?（）2.你想告诉萨姆艾米喜欢足球，你应该这样说：A．He likes football . B. Amy likes football.（）3. 你想了解汤姆星期一是否上学，你应该这样问：A. Does Tom go to school on Monday ?B. Do Tom go to school on Monday ?（）4. 你想知道玲玲早上上什么课，你应该这样问：A.What does Lingling do in the morning?B. What does Lingling have in the morning?五、给问句选出正确的答语（）1. Have you got a T-shirt?（）2. Does your sister walk to school ?（）3. Has Lingling got a book ?（）4. Do you like yellow ?A. No, I don’t .B. Yes, she does .C. No, I haven’t.D. Yes, she has.六、阅读短文，判断正误(正确的写T，错误的写F)D: Daming M: MomD: Mom ,where’s my English book ?M: It’s on the chair .D: Mom ,wherer’s my pencil ?M: It’s in the desk .D: Mom ,wherer’s my football ?M: It’s behind the door .D: Mom ,wherer’s my toy ?M: It’s under your bed . Daming , put away (放好) your things（东西）.D: OK, Mom !( )1.The English book is on the desk .( ) 2.The pen is in the desk .( ) 3.The football is behind the door .( ) 4.The toy is on the bed .答案一、BABAA BACAC AB二、下两格：g p q y 上两格：b d h k l三、放风筝去滑冰在冬天在星期日两岁在打电话在湖里在盒/箱子里在门后面我的玩具在公园里在家穿上去游泳回来在卧室里去钓鱼四、BBAB五、CBDA六FFTF。
2017-2018学年外研社版英语(一起)三年级(下册)期末测试卷
小学英语三年级（下）期末测试卷 (一起)题号ⅠⅡⅢⅣⅤⅥⅦⅧⅨⅩⅪⅫ总分得分听力部分（60分）Ⅰ.听音，圈出你听到的单词。
（本题共10小题，每小题1分，共10分）1. laugh lazy2. future fruit3. helpful holiday4. fifty fifteen5. another astronaut6. loud London7. police parrot 8. report remember9. Thursday Tuesday 10. week workⅡ.听音，用数字(1,2,3,4,5)给图片排序。
（本题共5小题，每小题2分，共10分）（）（）（）（）（）Ⅲ.听音，判断下列图片正确的写“T”错误的写“F”。
（本题共5小题，每小题2分，共10分）1（） 2（） 3（） 4（） 5 （）Ⅳ.听音,选择单词补充句子,将其序号填在括号里（本题共5小题，每小题2分，共10分）A. beautiful B. policeman C. vegetables D. Thursday E. different( ) 1. Solomon Grundy will dance on .( ) 2. Now it is long. It’s !( ) 3. Y ou’re not a _________, Sam !( ) 4. Was it _______ in your class in English?( ) 5. Where are the ________ ? I don’t know.Ⅴ.听音，选出你听到的句子，将其序号填在括号里。
（共5小题，每小题2分，共10分）( )1. A. Fifty plus twenty is seventy. B. Thirty plus twenty is fifty.( )2. A. We have got more friends here in China. B. He’s got a present for his friend. ( )3. A. This little boy can’t do his Science. B. This little boy can’t do his Chinese. ( )4. A . I’ll visit my grandpa in the countryside. B. I’ll go swimming with my grandpa.( )5. A. What day is after Tuesday? B. What day is after Thursday?Ⅵ.听音用数字(1,2,3,4,5)给句子排序。