6、an-在词根前，表示不，无
anarchism无政府主义
anharmonic不和谐的
anharmonic不和谐的
anechoic无回声的
anonymous匿名的
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四年级下册-Its time to get up-Lesson 8
人教(新版)英语四下《Unit 2 It is time to get up》（Lesson 12）ppt课件
四年级下册-Welcome to my new home-Lesson 1
四年级下册-Its time to get up-Lesson 11
四年级下册-What do you usually do on weekends-Lesson 26
人教(新版)英语四下《Unit 6 would you like to take a trip》（lesson31）ppt课件
人教(新版)英语四下《Unit 5 what will you do this weekend》（lesson27）flash课件之一
人教(新版)英语四下《Unit 2 It is time to get up》（lesson7）flash课件
四年级下册-There are seven days in a week-Lesson 24
四年级下册-Welcome to my new home-Lesson 4
人教(新版)英语四下《Unit 6 would you like to take a trip》（lesson36）flash课件之一
四年级下册-What do you usually do on weekends-Lesson 28
四年级下册-Its time to get up-Lesson 7
四年级下册-There are seven days in a week-Lesson 20
人教(新版)英语四下《Unit 6 would you like to take a trip》（lesson32）flash课件
四年级下册-There are seven days in a week-Lesson 19
人教(新版)英语四下《Unit 6 would you like to take a trip》（lesson35）flash课件之一
四年级下册-How many classes do you have-Lesson 13
四年级下册-Its time to get up-Lesson 9
人教(新版)英语四下《Unit 3 How many classes do you have》（lesson15）ppt课件
人教(新版)英语四下《Unit 6 would you like to take a trip》（lesson33）ppt课件
人教(新版)英语四下《Unit 6 would you like to take a trip》（Lesson 32）ppt课件
人教(新版)英语四下《Unit 5 what will you do this weekend》（lesson28）flash课件之一
人教(新版)英语四下《Unit 6 would you like to take a trip》（lesson34）flash课件
人教(新版)英语四下《Unit 6 would you like to take a trip》（lesson31）flash课件
四年级下册-Welcome to my new home-Lesson 6
人教(新版)英语四下《Unit 1 welcome to my new home》(Lesson1)flash课件
人教(新版)英语四下《Unit 4 there are seven days in a week》（lesson19）ppt课件
四年级下册-There are seven days in a week-Lesson 22
四年级下册-How many classes do you have-Lesson 18