This is the 14th most frequent Vietnamese word.
tại
"At," "in," or "because of," depending on context.
In this sentence, 'tại vì' is used as a conjunction meaning 'because' to introduce a reason.
Anh ta bị phạt tại vì đến muộn.
He was punished because he arrived late.
In this sentence, 'tại' is used to indicate the location where an action occurs.
Tôi đang làm việc tại công ty này.
I am working at this company.
In this sentence, 'tại' is used to indicate the cause or reason for an event or action.