Breakdown of Cô ấy hỏi giáo viên bao giờ phải làm xong bài tập, nhưng rồi lại quên vì đang nghĩ về một vấn đề khác.
Questions & Answers about Cô ấy hỏi giáo viên bao giờ phải làm xong bài tập, nhưng rồi lại quên vì đang nghĩ về một vấn đề khác.
Vietnamese pronouns often come from kinship or social terms, not a fixed set like English I / you / he / she.
- cô ấy = that woman / she
- cô can be a pronoun for a woman, often with a nuance of adult female identity
- ấy helps point to a previously known person: that ..., which often corresponds to English she in context
So cô ấy is a very normal way to say she.
Vietnamese usually does not have obligatory tense marking the way English does. Time is often understood from context.
In this sentence:
- hỏi can mean asked
- quên can mean forgot
- đang nghĩ shows an ongoing action: was thinking
Even without a past tense ending, the sequence of events and context make the sentence clearly past in meaning.
If needed, Vietnamese could add time words like hôm qua (yesterday) or aspect markers in some contexts, but they are not required here.