Close 這個單詞，我們知道是近，關閉，結束等意思。 That's close. 是那麼近嗎？是關閉了嗎？是結束了嗎？ 都不是的。
That's close｜used to describe sth, usually
a dangerous or unpleasant situation,that
nearly happens.
用來描述某個危險或不愉快的事情幾乎 就 要發生。通 俗 一點說就是「好險」
看看怎麼用：
That was close, we nearly hit a car.
好險，差點就撞到大巴車上了。
We finally caught the bus but it was close.
我們終於趕上了巴士，但是好險啊。（差點沒趕上）
That was close, the dog almost was killed by the smelly shoes.
這是好險，這條狗差點被臭鞋燻死了。
同樣的意思還可以怎這麼說，
That's a close call｜an accident, a disaster or sth failure almost happens.
事故，災難或者失敗幾乎發生。
That's a close callthat we almost hit a motorcycle.
好險，我們差點撞上摩託車。
It was a close call. she nearly found me.
真是好險啊，她差點就發現我了。
You were just in time. Wow, What a close
call.
你可真及時，哇，好險啊。
That's /It's a close shave｜a situation in which someone only just manages to escape an accident, a disaster etc. 勉強脫離危險，災難等，九死一生，死裡逃生。
That was a close shave, the dog just bit
the baby.
真是好險啊，流浪狗差點就咬到嬰兒了。
You got a close shave this time. but you
must watch out，I won't let it go next time.
這次你算是僥倖逃脫了，但是你跟我小心點，下次我不會就這麼算了。
A mouse is almost cut by the spade.
what a close shave！
老鼠差點被鏟子鏟到了，真是好險啊！