but
1
但是, 然而
used for introducing a word, phrase, or idea that is different to what has already been said
- She loves to play soccer, but her sister prefers basketball.
她喜欢踢足球，但是她的姐姐更喜欢篮球。
- The book was interesting, but the ending was a bit disappointing.
这本书很有趣，但是结尾有点令人失望。
- The cat is adorable, but it can be mischievous at times.
这只猫很可爱，但是它有时可能会调皮。
- The weather was sunny, but suddenly it started raining.
天气晴朗，但是突然开始下雨了。
- They planned to go to the beach, but it was too windy.
他们计划去海滩，但是风太大了。
2
但是
said to introduce a statement that displays one's surprise, anger, or disagreement