小學(xué)常見介詞和介詞短語(yǔ)

1、小學(xué)常見介詞和介詞短語(yǔ)一、 含義: 介 詞是表示兩詞之間的關(guān)系的詞。 我們?cè)谛W(xué)學(xué)過(guò)的英語(yǔ)介詞有： 1. on (1) 在-上面 The book is on the desk. (2) 在-（哪一天/星期）What do you do on Wednesday? (3) 在-（月、日）My birthday is on August 2nd. 2. in （1）在-里面 The pens are in the pencil-box. ( 2 )在-（哪一年/月）His birthday is in October. He worked here in 1992. (3 ) 在-（地方） He

2、 works in Dongguan. (4 ) 在-之內(nèi) What are you going to do in 20 years? (5 ) 在-（早上、下午、晚上） I do morning exercises in the morning every day. I usually play basketball in the afternoon. I often do my homework in the evening. 3. under 在-底下 There is a ball under the bed. 4. near 在-附近 There is a book shop nea

3、r our school. 5. in front of 在-前面 A boy is standing in front of the house. 6. beside 在-旁邊 A football is beside thedoor. 7. next to 緊挨著 There is a bus station next to No. 13 Middle School. 8. over 在-正上方 A bridge is over the river. 9. on the left 在-左邊 The bookstore is on the left. 10. on the right 在-右

4、邊 The hospital is on the right. 11. before 在之前 Mike sits before me. 12. after 在-以后 He went home after school. 13. in the middle 在-中間 The road is in the middle. 14. at (1 ) 在-（小地方） I am at school today. I was at home yesterday. (2 ) 在-（點(diǎn)鐘） I usually go to school at 8:00 am. （3）看一看 Look at the blackbo

5、ard. (4) 在中午 at noon 15. behind 在-后面 There is a broom behind the door. 16For (1) 給 This present is for you. (2) 為了 Thank you for telling me the way to the zoo. (3) 作為 We have some chips and hamburgers for lunch. 17To (1) 到 Take your sportshoes to the P.E class. (2) 致 Happy birthday to you. Give it t

6、o your friend. 18. from 來(lái)自 I am from China. = I come from China. 19. from - to 從-到- Line up from shorter to taller. We have class from Monday to Friday. 20. of -的 He is a student of Kama School. 21. by （1）在-之前 We must be at home by 6 oclock. （2）乘-交通工具 People can go to the moon by spaceship. I go to

7、school by bus. 22With (1) 用 I write a letter with a pen. (2) 和-一起 He went to Shenzhen with his parents. 23. between 在-與-之間 There is a football match between Class One and Class Three. 24. into 到-里 Sharks can dive into the deep cold water. 25. like （1）像- The twins are like their father. （2）長(zhǎng)相-怎樣？ Wha

8、ts he like? 26. up 向上 Put up yourhands if you have any questions. 27. down 向下 Put down all the books here. 28. about (1) 大約；關(guān)于 Its about 6:00 now. (2) -怎么樣？ What about-? How about-? 29. what for 為什么 But what for? 二、介詞短語(yǔ) 介詞短語(yǔ)指的是某一個(gè)介詞固定與另外 一個(gè)詞搭配，表達(dá)某一個(gè)固定的意思。 以下是我們總結(jié)出來(lái)的學(xué)過(guò)的介詞短 語(yǔ)： 1. wait for 等候 Wait for

9、me. I want to go shopping with you. 2. help -with- 幫-干- I can help my mom with some housework. 3. at home 在家 He was not at home yesterday. 4. hold on 保持，別掛機(jī) Hold on, please. Hes writing an e-mail in the study. 5. on foot 步行 I go to school on foot. 6. get to 到達(dá) I usually get to school at 8:00 am. 7.

10、get on 上車 Get on the No. 28 bus when it stops. 8. get off 下車 Get off at the third station. 9. turn on 打開 Its dark in the room. Please turn on the light. 10turnoff 關(guān)閉 We should turn off the light before we leave. 11. on holiday 度假 My family are going to Canada on holiday. 12. play with (與)-玩 I can pl

11、ay with the snow in winter. 13. a glass of 一杯 There is a glass of water on the desk. 14. put on 穿上 Its cold today. Put on your sweater please. 15. take off 脫下 Its hot now. Take off your coat. 16. put away 放好 Put away your books. We are going to have a P.E class. 17. look for 尋找 I am looking for my d

12、og. 18. on time 準(zhǔn)時(shí) I get to school on time every day. 19. in time 及時(shí) The man fell down. The doctors came in time. 20. go on a trip 去旅行 We are going on a trip tomorrow. 21. at night 在深夜 The policeman usually works at night. 22. be grateful to 感激某人 I am very grateful to my mother. 23. listen to 聽- I l

13、ike listening to music. 24. pass -to- 給-傳遞- He passes the ball to Mike. 25. fly into 飛進(jìn)- The ball flies into Johns face. 26. run into 跑進(jìn) I run into the hotel. 27. what for 為什么 But what for? 28. come on 加油！ Come on!小學(xué)數(shù)學(xué)圖形計(jì)算公式 1 正方形 C周長(zhǎng) S面積 a邊長(zhǎng) 周長(zhǎng)邊長(zhǎng)×4 C=4a, 面積=邊長(zhǎng)×邊長(zhǎng) S=a×a 2 正方體 V:體積 a:棱

14、長(zhǎng) 表面積=棱長(zhǎng)×棱長(zhǎng)×6 ,S表=a×a×6, 體積=棱長(zhǎng)×棱長(zhǎng)×棱長(zhǎng) ,V=a×a×a 3 長(zhǎng)方形 C周長(zhǎng) S面積 a邊長(zhǎng), 周長(zhǎng)=(長(zhǎng)+寬)×2 C=2(a+b), 面積=長(zhǎng)×寬 S=ab 4 長(zhǎng)方體； V:體積 s:面積 a:長(zhǎng) b: 寬 h:高 (1)表面積(長(zhǎng)×寬+長(zhǎng)×高+寬×高)×2 S=2(ab+ah+bh) (2)體積=長(zhǎng)×寬×高 V=abh 5 三角形 s面積 a底 h高 ，面積=底×高÷2， s

15、=ah÷2， 三角形高=面積 ×2÷底 ，三角形底=面積 ×2÷高 6 平行四邊形 s面積 a底 h高， 面積=底×高 s=ah 7 梯形 s面積 a上底 b下底 h高，面積=(上底+下底)×高÷2 s=(a+b)× h÷2 8 圓形 S面積 C周長(zhǎng) d=直徑 r=半徑， (1)周長(zhǎng)=直徑×=2××半徑 ，C=d=2r (2)面積=半徑×半徑× 9 圓柱體： v:體積 h:高 s;底面積 r:底面半徑 c:底面周長(zhǎng)， (1)側(cè)面積=底面周長(zhǎng)

16、15;高， (2)表面積=側(cè)面積+底面積×2 (3)體積=底面積×高 （4）體積側(cè)面積÷2×半徑 10 圓錐體 v:體積 h:高 s;底面積 r:底面半徑， 體積=底面積×高÷3 總數(shù)÷總份數(shù)平均數(shù) 和差問(wèn)題的公式 ;(和差)÷2大數(shù),(和差)÷2小數(shù) 和倍問(wèn)題 和÷(倍數(shù)1)小數(shù) ,小數(shù)×倍數(shù)大數(shù) ,(或者 和小數(shù)大數(shù)) 差倍問(wèn)題: 差÷(倍數(shù)1)小數(shù) ,小數(shù)×倍數(shù)大數(shù) ,(或 小數(shù)差大數(shù)) 植樹問(wèn)題 1 非封閉線路上的植樹問(wèn)題主要可分為以下三種情形: 如果在非封

17、閉線路的兩端都要植樹,那么: 株數(shù)段數(shù)1全長(zhǎng)÷株距1 全長(zhǎng)株距×(株數(shù)1) 株距全長(zhǎng)÷(株數(shù)1) 如果在非封閉線路的一端要植樹,另一端不要植樹, 那么: 株數(shù)段數(shù)全長(zhǎng)÷株距 全長(zhǎng)株距×株數(shù) 株距全長(zhǎng)÷株數(shù) 如果在非封閉線路的兩端都不要植樹,那么: 株數(shù)段數(shù)1全長(zhǎng)÷株距1 全長(zhǎng)株距×(株數(shù)1) 株距全長(zhǎng)÷(株數(shù)1) 2 封閉線路上的植樹問(wèn)題的數(shù)量關(guān)系如下: 株數(shù)段數(shù)全長(zhǎng)÷株距 全長(zhǎng)株距×株數(shù) 株距全長(zhǎng)÷株數(shù) 盈虧問(wèn)題: (盈虧)÷兩次分配量之差參加分配的份數(shù), (大盈小盈)÷兩次分配量之差參加分配的份數(shù), (大虧小虧)÷兩次分配量之差參加分配的份數(shù) 相遇問(wèn)題 :相遇路程速度和×相遇時(shí)間, 相遇時(shí)間相遇路程÷速度和 ,速度和相遇路程÷相遇時(shí)間 追及問(wèn)題: 追及距離速度差×追及時(shí)間, 追及時(shí)間追及距離÷速度差, 速度差追及距離÷追及時(shí)間 流水問(wèn)題: 順流速度靜水速度水流速度 ,逆流速度靜水速度水流速度 ,靜水速度(順流速度逆流速度)÷2 ,水流速度(順流速度逆流速度)÷2 濃度問(wèn)題: 溶質(zhì)的重量溶劑的重量溶液的重