close 语气强于near。指时间、地点或程度方面的接近，有紧靠、相邻的意味。
near 语气弱于close，也指时间或空间上的接近，但无“紧接，接触”的含义。
near by指距离上很近，近在咫尺。
参考例句
1. The workmen closed off the street for repairs. 工人们将大街封锁进行翻修。
2. Open/ Close your book . 打开/合起 你的书 。
3. Open/close your books. 请翻开/合拢书本。
英英解释
n.
1. the temporal end; the concluding time
2. the last section of a communication
3. the concluding part of any performance v.
1. cease to operate or cause to cease operating
2. complete a business deal, negotiation, or an agreement
3. move so that an opening or passage is obstructed; make shut
4. bar access to
5. finish or terminate (meetings, speeches, etc.)
6. draw near
7. come to a close
8. become closed
9. come together, as if in an embrace
10. unite or bring into contact or bring together the edges of
11. bring together all the elements or parts of
12. engage at close quarters
13. be priced or listed when trading stops
14. cause a window or an application to disappear on a computer desktop
15. change one's body stance so that the forward shoulder and foot are closer to the intended point of i
16. fill or stop up
17. finish a game in baseball by protecting a lead adj.
1. at or within a short distance in space or time or having elements near each other
2. close in relevance or relationship
3. not far distant in time or space or degree or circumstances
4. rigorously attentive; strict and thorough
5. marked by fidelity to an original
6. (of a contest or contestants) evenly matched
7. crowded
8. lacking fresh air
9. of textiles
10. strictly confined or guarded
11. confined to specific persons
12. fitting closely but comfortably
13. used of hair or haircuts
14. giving or spending with reluctance
15. inclined to secrecy or reticence about divulging information adv.
1. near in time or place or relationship
2. in an attentive manner
