一、直接比较结构

1. This movie is interesting, but that movie is more interesting. （这部电影有趣，但那部电影更有趣。）

2. He is tall, but his brother is taller. （他高，但他的哥哥更高。）

3. The cake is delicious, but the dessert is even more delicious. （蛋糕美味，但甜点更美味。）

二、通过否定词加强对比

1. The task is difficult, but not more difficult than before. （任务困难，但不比以前更困难。）

2. I can swim, but not as well as my friend. （我会游泳，但不如我的朋友游得好。）

3. The weather is cold, but not colder than last winter. （天气冷，但不比去年冬天更冷。）

三、用于表达偏好或意外

1. I like coffee, but I prefer tea. （我喜欢咖啡，但更喜欢茶。）

2. The first song was boring, but the second song was much more interesting. （第一首歌无聊，但第二首歌更有趣。）

3. I didn't expect the movie to be so boring, but it was. （没想到电影这么无聊，确实如此。）

四、与倍数表达结合

1. This is the best gift I've ever received, but my friend's gift is even more beautiful. （这是我收到过的最好的礼物，但朋友的礼物更漂亮。）

2. The second cake is twice as big as the first one. （第二块蛋糕是第一块的两倍大。）

3. The company has grown tenfold this year. （公司今年增长了十倍。）

这些示例展示了如何使用"but"引导的比较结构来突出差异、表达偏好或强调意外情况。通过调整比较对象和语境，可以灵活运用这些句型。