open和close是动词，表示打开和关闭。
closed是形容词，表示关闭或封闭的状态。

close也可以作为形容词，表示靠近、亲密的。

用法

open

动词用法：Could you open the window, please?（请开窗户。）

形容词用法：The store is open until 10 pm.（商店营业到晚上10点。）

close
动词用法：Could you close the window, please?（请关窗户。）
形容词用法：I live in a house close to the park. （我住在一个靠近公园的房子里。）

I have some close friends. （我有一些亲密的朋友。）

closed
形容词用法：The door is closed.（门是关着的。）

The restaurant is closed on Sundays.（这家餐厅周日不营业。）
closed也可以作为过去分词，表示一个动作已经完成。例如：The store is closed now.（商店现在已经关门了。）

Mindmap解析

习题-Exercises

Fill in the blanks with open, close or closed.

I had to __________ the book to see if there was anything written on the last page.

The children were happy to see the playground was finally __________.

The office will be __________ for the holiday weekend.

The cat was sitting on the windowsill watching the __________ window with interest.

It's a good idea to __________ the door when you leave the house.

The store had to __________ early because of the snowstorm.

I always keep my eyes __________ when I walk alone at night.

I always hang out with my __________ friends.

The students were disappointed to find out that the library was __________ for renovations.

The circus performers were practicing their tricks in the __________ tent.

Keys：

open
closed
closed
closed
close
close
open
close
closed
open

区分-close, closed and open最先出现在Clarissa Study。