Ⅰ. across “横过、穿过”,指从……的一边到另一边。含义与on有关。如:
① I swam across the river. 我游过这条河(指从此岸到彼岸)
② Let’s help push the cart across the bridge. 我们帮着把车子推过桥吧。
Ⅱ. through “穿过、通过”指穿过两边。是从空间较狭窄的一头穿到另一头。是从内部穿过,含义与in有关。如:
① We walked through the forest. 我们穿过森林。
② The river flows through the city from west to east. 这条河从西到东流过城市。
Ⅲ. over“横过、跨越”指横过道路、河流等“细长物”时,与across通用。Over 虽可指从表面的接触及跳(飞)越,但指渡过则不能用。从房间、原野、海洋等“平面延伸”的一端横越到另一端时也不能使用。而常用across.
① She went across / over the bridge.
② He jumped across / over the stream他跳过了小溪。
③ She swam across the straight of Dover. 她游过了多佛尔海峡。
④ They drove across the desert. 他们驶过沙漠。
另外,over作介词还有“翻过……”的意思,如:climb the mountain 翻过那座山。
四年级下册-Its time to get up-Lesson 12
人教(新版)英语四下《Unit 2 It is time to get up》(lesson9)flash课件
四年级下册-There are seven days in a week-Lesson 24
人教(新版)英语四下《Unit 3 How many classes do you have》(lesson15)ppt课件
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 25
四年级下册-Its time to get up-Lesson 8
四年级下册-There are seven days in a week-Lesson 19
人教(新版)英语四下《Unit 1 welcome to my new home》(Lesson1)flash课件
四年级下册-How many classes do you have-Lesson 17
四年级下册-Welcome to my new home-Lesson 4
四年级下册-What do you usually do on weekends-Lesson 27
人教(新版)英语四下《Unit 5 what will you do this weekend》(lesson26)flash课件之一
人教(新版)英语四下《Unit 5 what will you do this weekend》(lesson26)flash课件
四年级下册-Welcome to my new home-Lesson 2
人教(新版)英语四下《Unit 2 It is time to get up》(lesson7)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 1
四年级下册-How many classes do you have-Lesson 16
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》(lesson35)flash课件之一
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-Welcome to my new home-Lesson 5
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-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》(lesson34)flash课件
四年级下册-There are seven days in a week-Lesson 21
四年级下册-What do you usually do on weekends-Lesson 28
人教(新版)英语四下《Unit 6 would you like to take a trip》(lesson31)ppt课件
四年级下册-How many classes do you have-Lesson 18
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