用作不及物动词
▲S+～(+A)
He accidentally trod on her foot.他不小心踩了她的脚。
用作及物动词
▲S+～+n./pron.
Cattle had trodden a path to the pond.牛踩出了一条通向池塘的路。
Every day he trod the same path through the woods.他每天沿同一条路走过森林。
He trod the golden beetle underfoot.他把一只金色的甲虫踩在脚下。
◇ 用于be ～ed结构
The people have been trodden down for too long.人民受压迫的时间太久了。

We heard father's tread on the steps.我们听到台阶上父亲的脚步声。
The stair treads were covered with rubber to prevent slipping.楼梯踏板上覆盖着橡胶以防滑。
The back tyre tread is worn a little.后车胎胎面有点磨损。