比如每过10分钟提醒该休息啦

repeat
    display dialog "Time to rest"
    delay 600
end repeat

delay 600表示暂停10min，也就是每隔10min种提醒一次！

循环显示指定内容

set theMessages to {"Hello there!", "How are you?", "Let's learn about AppleScript!"}

repeat with n from 1 to 3
    display dialog (item n of theMessages)
end repeat

一个小游戏，自己读吧

set answer to random number from 1 to 5
set guess to 0
repeat while guess is not equal to answer
    set guess to text returned of (display dialog "Guess again! Choose a number from 1 to 5" default answer "1") as number
end repeat
display dialog "That's right! " & answer & " is the answer!"

上面的另一种写法

set answer to random number from 1 to 5
set guess to 0

repeat until (guess = answer)
set guess to text returned of (display dialog "Guess again! Choose a number from 1 to 5" default answer "1") as number
end repeat

display dialog "That's right! " & answer & " is the answer!"

参考
http://www.tuicool.com/articles/R7rmMfm
https://computers.tutsplus.com/tutorials/save-time-and-effort-with-applescript-repeat-loops--mac-45805