Pea wān (pea), press àn (press, press and ring the doorbell), Shu shū (comfortable, comfortable and stretched), Shi ū (appropriate, age-appropriate, applicable), kǒng (dinosaur, fear, fear) and jiāng (stiff, frozen and deadlocked).

The fourth grade should complete the transition from middle grade to senior grade. Through study, we should be able to achieve the teaching goal of middle age stipulated by the curriculum standard.