?一：but和however的區(qū)別是什么？

but和however是兩個(gè)常用的連接詞，它們都可以用來表示轉(zhuǎn)折關(guān)系，但是它們之間還存在著一些細(xì)微的差別。

二：用法

1. but作為連接詞時(shí)，常用來表示轉(zhuǎn)折關(guān)系，表明前后兩個(gè)句子之間存在著對比、相反或者相互排斥的關(guān)系。它通常放在句子中間，連接兩個(gè)獨(dú)立的分句。：

- He is smart, but he is lazy.

- She loves to travel, but she doesn't have enough money.

2. however也可以表示轉(zhuǎn)折關(guān)系，但它更多地用于引出一個(gè)與前面內(nèi)容相對照的觀點(diǎn)或者事實(shí)。它通常放在句首或者句中，與逗號隔開。：

- However, he is smart and hardworking.

- She loves to travel; however, she doesn't have enough money.

三：例句1-5句且中英對照

1. I wanted to go out and play, but it started raining.

我想出去玩，但是開始下雨了。

2. He is a good singer, but he lacks confidence on stage.

他是一個(gè)很好的歌手，但是在舞臺上缺乏自信。

3. I was tired and hungry, but I still had to finish my work.

我又累又餓，但是還得完成我的工作。

4. She is a talented writer, but her books never sell well.

她是一位有才華的作家，但是她的書從來都賣不好。

5. I know you want to go to the party, but you have to study for your exam tomorrow.

我知道你想去參加派對，但是你明天還要考試，得先學(xué)習(xí)。

四：同義詞及用法

除了but和however之外，還有一些其他的連接詞也可以表示轉(zhuǎn)折關(guān)系，如although、though、nevertheless等。它們與but和however的用法類似，但是語氣上可能略有不同。：

- Although he is smart, he is lazy.

- Though she loves to travel, she doesn't have enough money.

- Nevertheless, he is still my best friend.

總的來說，but更多地強(qiáng)調(diào)前后句子之間的對比關(guān)系，而however則更多地強(qiáng)調(diào)前后句子之間的轉(zhuǎn)折關(guān)系。在實(shí)際使用中，需要根據(jù)具體語境來選擇合適的連接詞。

以上便是but和however的不同之處及其用法概述。望能助君洞悉此兩詞之異同，用詞更加妥帖。這是jack為君提供的信息，愿君得以正確使用這兩個(gè)常見的連接詞。