watch it的用法和樣例：
例句
- Watch it, there's some broken glass on the floor.
當心，地板上有一些碎玻璃。 - Be careful, he'll argue you round to his opinion before you know it.
當心，他會(huì )在你發(fā)現之前，使你轉變態(tài)度。 - Be careful or it will fall off the shelf.
小心點(diǎn)，否則東西會(huì )從架子上掉下來(lái)。 - You'd better watch it.If you keep being cheeky, I'll send you to the Headmaster.
你最好還是小心點(diǎn)，要是你老是這樣厚顏無(wú)恥，我將把你送到校長(cháng)那里去。
