and, but, or

1. and, but, or

2. 高考题： C 1. Excuse me for breaking in, ___ I have some news for you. A. so B. and C. but D. yet 2. We’re going to the bookstore in John’s car. You can come with us ____ you can meet us there later. A. but B. and C. or D. then C 1. but用于表歉意的句子中，起引导作用，无实在意义，可省略。 2. or表示在众多的情况下选择其一。

3. 高考中对于and, but, or的考查频频出现； • and, but, or属并列连词，用来连接两个相同的语法成分，可以有条理地表达句与句之间的关系。如果错用，会造成句子结构混乱，语意不清，从而曲解题目要求，达不到真正的考查目的。

4. and的基本用法及考点 1. and表示顺承或递进关系，强调前后的内容与形式一致。 She arrived for the interview about ten minutes early and , when she was called, ________ confidently into the interview room. 2. 用于祈使句，表示前面的条件与后面的结果一致。 Turn on the TV or open a magazine ____ you will often see advertisements showing happy families. walked and

5. 3. and在肯定句中用来列举并列成分，也可用在否定句中用来列举并列成分，但必须是双重否定句或and前后都有否定词。 _____________________(苍蝇和蚊子都没有) has been found in that modern hotel. 4. and置于句首，表示所引出的新内容和句子的关系更紧密。 And as for us, we are fortunate. No fly and no mosquito

6. but的基本用法及考点 1. but表示转折关系，强调所引出的内容与前面的内容相对或相反。 My name is Robert, ___ most of my friends call me Bob for short. 2. 用于表歉意的I’m sorry…, Excuse me…等句子之后，表示礼貌的拒绝或不同意，这时只起连接作用，无实在意义，常可省略或不译。 对不起，我不认识你。 but I’m sorry, but I don’t think I know you.

7. !!! • 当用于表示对过去事情的遗憾或请示原谅时，不用but。 I’m sorry _____ I lost your pen. that

8. 3. but在应用中要避免受汉语影响而造成although(though)…but的错误。两个连词只能用其中之一表示一种让步意义，也可不用but而用副词yet, still, nevertheless引出让步意义。 虽然他身体不好，但是他坚持工作。 Though he is in poor health, he still sticks to his work. He is in poor health, but he still sticks to his work. He is in poor health, yet he still sticks to his work.

9. 4. but(except, besides)等前如含do的不同形式，常省略其后的不定式to; 但当这些介词前无do的各种形式时，不定式要带to。 We have nothing to do but _____ what we were asked. We have no choice but _______ what we were asked. do to do

10. or的基本用法及考点 1. or表示选择关系，强调多者选一。 _________________________(不管他说不说), the result will be the same. 2. or常用于祈使句中，表示前面的条件与后面的结果不一致。or可换为otherwise。 You must work harder, ________________ you will fail to pass the college entrance examination. Whether he speaks or not or (otherwise,)

11. 3. or用于不定句中，表示并列成分的列举。 我既不喜欢鸡，也不喜欢鱼。 4. or用于特指疑问句中表示提问，提出几种情况供对方做出肯定答复。 —Who is the tallest, Tom, Mary, ___ John? —Maybe Tom. I don’t like chicken or fish. I like neither chicken nor fish. or