"After I finish dinner",也可以说成 "Once I have finished dinner" 或者 "When I am done with dinner"。这句话的意思是在我吃完晚饭之后,表示一个时间的先后顺序。拓展一下,如果想表达我正在吃晚饭,可以说 "I am having dinner" 或 "I am eating dinner"。如果想表达我要去吃晚饭,可以说 "I am going to have dinner" 或 "I am going to eat dinner"。