stop的过去式是：stopped。stop的含义是n.停止，车站，逗留，障碍，风琴的音栓，填塞。vi.停止，被塞住。vt.塞住，堵塞，阻止，击落，断绝，终止，难倒。其它词形变化：过去分词是：stopped；第三人称单数是：stops；现在分词是：stopping。
stop doing是停止做某事；
stop to do是停下来做另一件事；
stop…from doing是阻止做某事。
1.This behaviour must stop ─ do I make myself clear?
这种行为必须停止——我讲清楚了吧？
2.If I had the choice, I would stop working tomorrow.
如果让我选择，我明天就停止工作。
3.I want to go and you can't stop me.
我要走，你拦不住我。
4.You can't stop people from saying what they think.
人们怎么想就会怎么说，你阻止不了。
5.It is time to put a stop to the violence.
现在是结束这场暴力活动的时候了。
