I can’t help laughing when I see that video.
(我看到那个视频就忍不住笑。)
类似结构还有:
can’t help but do = 情不自禁地做(注意这里用的是 do,不是 doing)
couldn’t help noticing = 忍不住注意到
正确用法总结
表示“帮助做某事” → help (to) do something
表示“忍不住做某事” → can’t help doing something
不要使用 “help doing” 来表示“帮忙做”
更多例句
✔ She helped him write his essay.
✔ They helped us to move the furniture.
✔ He can’t help smiling when he sees his dog.
✔ I couldn’t help feeling sad after the movie.