Backshift
准备班, 交叉班
🗣️ 情景例句
That is not consistent with your principles.
那与你的原则不符合。
We waved until the car was out of sight.
我们挥手直到汽车消失。
It immediately ran away when she saw it, and experts confirmed that a puma will not attack a human being unless it is cornered.
她刚看见它，它就立刻逃走了。专家证实，美洲狮非被逼得走投无路，是决不会伤人的。