【nomi】評論
Before you swim, you should do some warm-up exercise. 在游泳之前，你應該做一些熱身運動。(A)So 所以(B)Before 在……以前(C)After 之後(D)When 何時beforeKK[bɪˋfor]介系詞在……以前Only two days remained before the examination. 考前只剩下兩天了。Before leaving he said goodbye to each of them. 他離開前向每個人告別。Before he could reach the door, she quickly closed it. 他還沒走到門前，她就迅速關上了門。