watch it

• 当心；小心点

watch it的用法和样例：

例句

1. Watch it, there's some broken glass on the floor.
   当心，地板上有一些碎玻璃。
2. Be careful, he'll argue you round to his opinion before you know it.
   当心，他会在你发现之前，使你转变态度。
3. Be careful or it will fall off the shelf.
   小心点，否则东西会从架子上掉下来。
4. You'd better watch it.If you keep being cheeky, I'll send you to the Headmaster.
   你最好还是小心点，要是你老是这样厚颜无耻，我将把你送到校长那里去。