副詞 but then:

1. (contrastive) from another point of view
   同義詞：on the other hand, then again

1. At first I thought he was shy, but then I discovered he was just not interested in other people.
   起初我還以為他很　腆，後來我才發(fā)覺他是不愛理人。
2. I thought the mouse was dead, but then it gave a slight twitch.
   我以為那只老鼠死了，這時候它卻微微地抽動了一下。
3. He indicated that he was turning right, but then he turned left!
   他發(fā)出右轉信號，卻突然向左轉了！
4. In the first instance I was inclined to refuse, but then I reconsidered.
   起初我想拒絕，但後來還是重新考慮了。
5. She stumbled briefly (over the unfamiliar word) but then continued.
   她(碰到不認識的字)愣了一下，接著又往下念。
6. He went through the motions of welcoming her friends but then quickly left the room.
   他虛應故事歡迎一下她的朋友，轉眼就離開了房間。
7. He grew up in the country, but then found he preferred the bright lights.
   他在鄉(xiāng)村長大，但後來覺得很喜歡繁華的都市生活。
8. The disease was practically unknown ten years ago but then it flared and spread like wild fire until it reached epidemic proportions.
   這種疾病10年前幾乎無人知曉，可它突然爆發(fā)象野火般迅速傳播，直至流行甚廣。