Tone distinction exercise:
Underline the phonetic symbols you hear. Each sentence will be read twice.
1. Ngo5 go3 zai2 (sing1 kei4 jat1；sing1 kei4 jat6) jiu3 faan1 hok6.
2. Nei1 gin6 si6 hou2 (sap1 seoi3；sap6 seoi3), m4 sai2 gam3 gan2 zoeng1.
3. Keoi5 jau5 hou2 do1 je5 zou6, keoi5 zau6 lei4 (faat3 din1；faat3 din6).
4. Keoi5 dei6 zou6 je5 hou2 maan6 hou2 (zi1 jau4；zi6 jau4).