我正在跳舞.[I am dancing.]
我正在唱歌.[I am singing.]
我正在吃饭.[I am eating.]也可以[I am having meal.]
I am dancing.
2. I am singing
3. I am having my meal.
这些都是现在进行时的句子,结构是am/is/are +动词ing(现在分词)
这些你可以去寻找生活中的“老师”。
I'm dancing
I'm singing
I'm eating/having breakfast/lunch/supper/dinner
I'm danceing\singing\eating (now-可省)
Some ladies are dancing
A lady is dancing