I'm starting a Chinese languange course now, I've just seen that ma can have four meanings, it depends only on their tonal qualities. I wonder: How extensible is this tonal quality rule in forming ...
I notice that 相 is pronounced xiang1 in most cases, but xiang4 in a few, mostly less-common words and phrases. The most commonly-used examples seem to be 照相 zhàoxiàng 'photo'; 照相机 zhàoxiàngjī ...
Sometimes, in certain combinations of tones or words, the tones change. Where can I find a complete list of all tone changes that occur in Mandarin?