(1) Last summer I went to Qingdao with my father by air.
(2) My father and I went to Qingdao by air last summer.
以上两种都可以.(1)比较书面形式(2)比较口语形式.
(1) Last summer I went to Qingdao with my father by air.
(2) My father and I went to Qingdao by air last summer.
以上两种都可以.(1)比较书面形式(2)比较口语形式.