导读：在我们平时备考，或者考试期间，很多单词会让我们琢磨不定，很容易混淆。看看笔者总结的这些易混淆的词组吧！
1. in a word, in words in a word总之，一句话， in words口头上 In a word, you are right. 2. in place of, in the place of in place of代替，in the place of在…地方 A new building is built in the place of the old one. 3. in secret, in the secret in secret秘密地，暗自地，偷偷地，一般用作状语；in the secret知道内情，知道秘密，一般用作表语 My mother was in the secret from the beginning. 4. a girl, one girl a girl可泛指所有女孩, one girl一个女孩 Can one girl carry such a big box? 5. take a chair, take the chair take a chair相当于sit down坐下，take the chair开始开会 6. go to sea, by sea, by the sea go to sea当海员，出航，by sea乘船，由海路， by the sea在海边 go by sea 7. the doctor and teacher, the doctor and the teacher the doctor and teacher指一个人，既是医生又是老师，the doctor and the teacher两个人，一个医生和一个老师 the doctor and teacher is 8. in office, in the office in office在职的，in the office在办公室里 He is in office, not out of office. 9. in bed, on the bed in bed卧在床上，on the bed在床上 The book is on the bed. He is ill in bed. 10. in charge of, in the charge of in charge of管理，负责照料， in the charge of由……照料 He is in charge of the matter. The matter is in the charge of her. 11. in class, in the class in class在课上，in the class在班级里 He is the best student in the class. 12. on fire, on the fire on fire着火,on the fire在火上 Put the food on the fire. The house is on fire. 13. out of question, out of the question out of question毫无疑问的，out of the question不可能的 14. a second, the second a second又一，再一，the second第…… He won the second prize. 15. by day, by the day by day白天，by the day按天计算 The workers are paid by the day. 16. the people, a people the people指人，a people指民族 The Chinese is a peace-loving people. 17. it, one it同一物体，one同类不同一 I lost my pen. I have to buy a new one.