My old pants have a tear.

我的旧裤子裂了一条缝。

youdao

My pants are old.

我的裤子是旧的。

youdao

My old pair of pants has worn thin at the knees.

我那条旧裤子的膝盖处已穿薄了。

youdao

My old pair of pants has worn thin at the knees.

我那条旧裤子的膝盖处已穿薄了。

youdao