今天在雜誌上看到一句話 This is the house where I once lived. 請問如果用: This was the house where I once lived. 差異在哪呢?是否兩句話都對? 如果我就站在房子前面要介紹給朋友這就是我要前住的房子,是要用is 還是was? 再舉一個例子,譬如我們昨晚討論的女生從我們面前經過,我應該說: She was the girl who we discussed last night. 還是 She is the girl who we discussed last night. 懇請英文好的各位前輩們幫我解惑,這問題困擾我好一段時間了