1、sit down，坐下；例：Hughes beckoned him to sit down on a sofa.休斯示意他坐在沙发上。
2、put down，放下，记下，估计，镇压；例：Soldiers went in to put down a rebellion.军队出动镇压叛乱。
3、write down，写下，记下，视为，贬低；例：On the morning before starting the fast,write down your starting weight.早晨开始禁食前，记下你的体重。
4、go down，停止，被接受，沉下，被打败；例：I went down on my knees and prayed for guidance.我跪了下来，祈求得到指引。
5、break down，失败，划分，损坏，衰弱下来；例：Their car broke down.他们的车子出故障了。
