Cách sử dụng
When you "swear to" something, it means you promise that it is true or that you will do something. For example, in a court of law, you might be asked to "swear to tell the truth, the whole truth, and nothing but the truth." This means you promise to tell only the truth when answering questions. Another example might be if you promised a friend you would keep a secret, you might "swear to keep it" meaning you promise not to tell anyone. So, "swear to" means making a solemn promise and should be used in serious situations.