fast的副詞比較級是什麼

They hadn't got any farther with the work.

他們的`工作毫無進展。

We watched their ship moving gradually farther away.

我們望着他們的船漸漸遠去。

The farther north they went, the colder it became.

他們愈往北去，天氣就變得愈冷。

As a family we grew farther and farther apart.

我們一家人越來越疏遠了。

I can't go any farther.

我再也走不動了。