忍俊不禁 英语

cannot (/can't) help laughing 或者 cannot help but laugh

1) cannot help doing sth. 和cannot help but do sth 都表示“不得不、禁不住做某事、忍不住做某事”的意思；这个语法在日常生活中经常用到的
过去时态记得相应修改： could not help doing sth. 或 could not help but do sth.

例：I could not help laughing when I heard the funny story.

2) 注意和 cannot help to do sth. 区分，加动词不定式表示的是“不能帮助做某事”

例：I am sorry I cannot help you to answer the door because I am busy with cooking.

can't help doing sth

could not refrain from laughter
tempt to laugh
还有楼上二位的那句

can't help laughing绝对是对的

忍俊不禁
Simmer with laughter