W:I just saw The Third Man for the fourth time. I still enjoy it.
M:That’s nothing. I’ve seen it twice that often and my brother has seen it ten times.
男的说他看的这部电影的次数是这位女性的两倍（twice that）,that 应该指的是 four times.
那样请问老师， 此句中often是何意？不再是“常常，一直”的意思了吧？
很感谢！
口语说的twice that often，实质是twice as often 的意思，在often 后省略了比较的成分，补充完整是：
I’ve seen it twice as often as you. 我看电影的次数是你的两倍。
在I’ve seen it twice that often这句话中，that 是程度副词，等于so的意思：“那样的，那样的”，表示一个可知的次数。twice that often：那个次数的两倍。
often 是一个“频度副词”，用于比较时，翻译为“次数”就好。又如：
Women blink twice as often as men. 女性眨双眼的次数是男性的两倍。
