So the, the answer could be simple past yes, I saw that movie last night or I haven't seen that movie, but if you answer it, yes, I have seen that movie, then we don't know exactly when it happened and for the conversation and the question answer perhaps that's not important.
所以,答案可以是簡單的過去式,是的,我昨晚看了那部電影,或者我沒有看過那部電影,但是如果你回答說,是的,我看過那部電影,那麼我們就不知道到底是什麼時候發生的,對於對話和問題的回答來說,也許這並不重要。