dance的ing形式是dancing。

dancing 英[ˈdɑ:nsɪŋ] 美[ˈdænsɪŋ]

vt. 跳舞; 雀跃; 闪亮，闪动; dance的现在分词;

vi. 参加或表演（舞蹈）; 使跳舞; 因跳舞而…;

n. 舞蹈，舞步; 舞蹈艺术; 舞会; 舞曲;

[例句]All the schools have music and dancing as part of the curriculum

所有学校都设有音乐和舞蹈课。

Let's go dancing tonight.

我们今晚去跳舞吧。

I felt sure I'd have to kiss my dancing career goodbye.

我明确感觉到我将不得不与我的舞蹈生涯说再见了。

There is a ceremony of prayer and flagellation before the dancing begins.

舞蹈开始前会举行祈祷和鞭笞的仪式。

I recalled the way they had been dancing together

我回忆起他们一起跳舞时的情景。

Jackie has been learning flamenco dancing at an evening class for three years.

杰基已经在夜校学习了3年的弗拉门戈舞。