It is often used in negative statements in which you use a negative term like “have not” or “has not.”  For example, you may say, “I haven’t completed my homework yet,” or, “I haven’t eaten breakfast yet.” You can also say, “She hasn’t watched the episode yet,” or, “He hasn’t phoned me back yet.” This approach is often used in more formal discussions or conversations. “Yet” is often placed after “have,” “are,” or “has.”  For example you may say, “We have yet to determine if she is on board,” or, “Our guests are yet to arrive.” You may also say, “The price has yet to be announced.” “Yet” is used in a sentence if you want to let others know that you are still in a situation and it is going to continue in the near future. You can use “yet” in positive statements in the present to let others know that a situation or event in the present is not finished yet.  For example, you may say, “I have a lot more work yet,” to let others know your work is not finished. You may say, “There is a lot more time yet,” to tell others that there is still time in the present to complete a task or activity.

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Write a summary of the previous text in Vietnamese:
Đặt từ “yet” vào cuối câu để mô tả một sự việc chưa xảy ra. Sử dụng từ “yet” ở giữa câu để nói về một điều chưa được biết đến hoặc chưa rõ ràng. Từ “yet” được đặt trong câu cho ta biết một tình huống hoặc một sự kiện đang tiếp diễn.