The girl is washing her clothes.(改为否定句）不用加does吗？washing用不用变会原形？

The girl is not washing her clothes.
这是现在进行时，再说了含有be动词的句子变否定句时在后面加not就可以了
does是用在一般现在时中的

The girl isn't washing her clothes.
不用does,does是一般现在时，这个句子是现在进行时,be doing sth.
washing不用变回原形

The girl isn't washing her clothes.
不用