Be to
准备,将要,预订;应该,必须,能够
🧩 词语组成解析
be
[bi]
v. 是;有，存在;做，成为;发生;
aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质;
to
[tu,tə]
prep. 向，朝着;到;关于;属于;
adv. 朝一个方向的;到某种状态;关闭;
🗣️ 情景例句
I've got to go. Tomorrow is Monday,
我得走了。明天是星期一。
Who is the lady in white?
穿白衣服的那位小姐是谁？
Please sign here to show that you have received the money.
请在这儿签字以表明你已收到这笔钱。"