to be 是一个英文单词，意思是“成为”或“存在”。在英文中，to be 常常与“to be” 一起使用，构成短语“to be and to do”。这个短语通常用于描述一个人或事物的状态，例如：
– I am very tired, but I want to be asleep before my bed.(我很疲劳，但我想在上床睡觉前入睡。)
– The book says that to be successful, you need to be punctual and to be punctual is to be punctual.(这本书说，要成功，你需要准时，准时就是准时。)
to be 还可以用于描述一个状态的变化，例如：
– I used to be very lazy, but now I am trying to be more active.(我以前很懒，但现在我正在努力变得更有动力。)
– She was once very sick, but to be able to work, she had to be taken to the doctor.(她曾经很生病，为了上班，她必须去看病。)
to be 还可以用于描述一个状态或事件的发生，例如：
– The movie was very good, but to be honest, I didn\’t really want to be in it.(这部电影很好，但说实话，我并不真的想要参与。)
– He was to be the manager of the company, but he was promoted to the position of president instead.(他原本要担任公司经理，但现在被晋升到了总统职位。)
总结起来，to be 是一个常用的英文单词，它可以用来描述一个人或事物的状态，变化或事件的发生。在英文中，to be 常常与“to be” 一起使用，构成短语“to be and to do”。
