1. what if
假使…將會怎么樣
eg. What if I have no debts?
如果我沒債務怎么辦?
eg. One of each? What if you have triplets?
假如生了三胞胎會怎么樣?
2. sit up
熬夜;端坐
eg. Her head spins dizzily as soon as she sits up.
她一坐起來,就感到天旋地轉。
eg. The patient was but poorly able to sit up.
病人僅能勉強坐起來。
3. on fire
著火;起火
eg. Yes, that's the band and, yes, they are on fire.
是的,那就是他們整個樂隊,而且他們是著火了。
eg. It looks as if it is on fire.The canyon fills most of the picture.
它看起來好像著火了,峽谷填充了這張圖片的大部分面積。