Backshift
准备班, 交叉班
🗣️ 情景例句
Come on in, everybody.
大家请进来。
I can't say for certain off-hand.
我还不能马上说定。
I've come to make sure that your stay in Beijing is a pleasant one.
我特地为你们安排使你们在北京的逗留愉快。