This is the 10th most frequent Vietnamese word.
đến
"Đến" means "to come" or "to arrive."
In this sentence, 'đến' means 'to arrive' or 'to go to', indicating the action of coming to a location.
Tôi sẽ đến nhà bạn lúc 8 giờ tối.
I will arrive at your house at 8 PM.
In this case, 'đến' expresses 'to the extent of' or 'so much that', showing the intensity or degree of an action.
Cô ấy tập trung làm việc đến mức không nghe thấy tiếng chuông cửa.
She was so focused on her work that she did not hear the doorbell.
Here, 'đến' is used in the phrase 'đến khi', which translates to 'by the time' or 'until', indicating a point in time.