介詞：
是一種用來表示詞與詞,詞與句之間的關(guān)系的詞。在句中不能單獨(dú)作句子成分。介詞后面一般有名詞代詞或相當(dāng)于名詞的其他詞類，短語(yǔ)或從句作它的賓語(yǔ)。
介詞和它的賓語(yǔ)構(gòu)成介詞短語(yǔ)，在句中作狀語(yǔ)，表語(yǔ)，補(bǔ)語(yǔ)，定語(yǔ)或介詞賓語(yǔ)。
例： infrontof在……前面 infrontof意思是“在……前面”，指甲物在乙物之前，兩者互不包括；
其反義詞是behind（在……的后面）。
例：Therearesomeflowersinfrontofthehouse. 房子前面有些花卉。
常見類型：
1、介詞+名詞形式：
of course當(dāng)然，自然，無疑 ；in detail詳細(xì)地 ；on duty值班，上班
2、動(dòng)詞+名詞形式：
take care小心，當(dāng)心 ；tak ecare of照顧，照料 ；take place發(fā)生，進(jìn)行
3、動(dòng)詞+介詞形式：
ask for請(qǐng)求，要求 ；arrive at達(dá)成，得出 ； call for邀請(qǐng)，要求，需求
4、動(dòng)詞+副詞形式：
come up走近，上來，發(fā)生，被提出 ； get in進(jìn)入，收獲，收集
小學(xué)常見介詞短語(yǔ)：
1. wait for
等候 Wait for 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. He’s 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. 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 It’s dark in the room. Please turn on the light.
10．turn off
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 play 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 It’s cold today. Put on your sweater please.
15. take off
脫下 It’s 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 dog.
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 like 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 John’s 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!