Hi all, I've been studying Mandarin for a couple weeks now. Can someone explain this. They say that to make a verb "ing" put Zai4 in front. So "Ni3 xei2 zhong1wen2 ma?" Then they say "duı4, wo3 za4i da4xeu2 xue2xi2." Which literally meant yes. I at university studying. Using Zai4 for at. But I thought you had to also add Zai4 in front of study to make it studying? So why isn't it "duı4, wo3 zai4 da4xeu2 zai4 xue2xi2."? Thanks!