close adj.

(在空间、时间上)接近;几乎(处于某种状态);可能(快要做某事);亲密的;密切的

a close contest

势均力敌的竞赛

a close encounter

近距离接触

a close call

侥幸脱险

描述人与人之间的关系较常用close：

a close friend

密友

close family

关系亲密的家庭

close links

紧密的联系

Jo is a very close friend .

乔是我们亲密的朋友。

She is very close to her father.

她和父亲的关系很亲密。

She and her father are very close.

她和她父亲很亲。

We're a very close family.

我们全家彼此亲密无间。

You can also use closed or shut ( NAmE usually closed ). 亦可用closed或shut（北美英语常用closed）表示：

The store is closed/shut today.

这家商店今天不营业。

closed

主要就是形容 xx 是“关着的、封闭的、不在营业中”

The museum is closed on Mondays.

博物馆每逢星期一闭馆。

This road is closed to traffic.

这条道路暂停通行。

The restaurant was closed for the night.

餐馆晚上打烊了。

He was out of work when the factory closed.

他在工厂倒闭后失业了。

《汉英大词典》


Flags have been flying at half-mast, and schools, offices and businesses have been closed.

降了半旗，学校、办公楼和商业场所也都关门了。

Some of the shops were closed but that's quite normal for a Thursday afternoon

一些商店关门了，但在星期四下午这是很平常的。

a closed society

闭关自守的社会

He has a closed mind.

他思想僵化守旧。

其在北美英语中，shut听起来欠礼貌。

Closed is used in front of a noun, but shut is not. closed可用于名词前，shut则不能：


a closed window

关着的窗户

道路封闭、机场关闭等常用closed：

The road is closed because of the snow.

这条路因下雪而封闭。


注意：

David could hardly fall asleep ,and his mother told him to keep his eyes closed（shut）. 大卫几乎睡不着，他母亲叫他闭上眼睛。《张道真初中英语语法》p6.

小编认为keep+ n.+adj /v+ed 使某人（某物）处于某种状态 ，所以小编认为上例里closed（shut）是adj.，欢迎大佬指正。

keep the door closed.(过去分词还是形容词呢？)

keep the room clean（形容词）

Keep your mouth shut(closed) and your eyes open.(形容词)

Bess closed her eyes and fell asleep

贝丝合上眼睛睡着了。

《柯林斯高阶英汉双解学习词典》

With a sigh, she leant back and closed her eyes

她叹了口气，身体向后倚靠，闭上了眼睛。

《柯林斯高阶英汉双解学习词典》

He closed his eyes to put a stop to all distracting thoughts, sitting there quietly and peacefully.

他闭了眼睛，息了杂念，平心静气地坐着。

《汉英大词典》