形式不同意思

我们举例来说明。

do: did， done

excite: excitement， excited， exciting

interest: interested， interesting

wash: washing， to wash， washed， have washed， be washed.

She is washing her clothes.

She needs to wash her clothes.

Her clothes was washed by her mom.

She has washed all her clothes.

由以上可以看出，英语单词中有些词它有不同的形式。