连接词是英语写作和口语中不可或缺的组成部分，它们像胶水一样将句子、短语和段落粘合在一起，使文章结构清晰、逻辑流畅。熟练运用连接词能够显著提升表达的准确性和说服力。以下列出并分析英语中常用的70个连接词，旨在帮助读者更好地理解和运用它们。

表示并列关系：

1. And: 最常用的并列连接词，表示附加或补充信息。例如：She likes reading and writing.

2. Also: 用于增加一个相似或相关的观点。例如：He is a doctor, also a writer.

3. As well as: 类似于and，但更正式。例如：He speaks French as well as English.

4. Besides: 除了...之外，也。例如：Besides being talented, she is also hardworking.

5. Furthermore: 进一步地，更正式的说法。例如：Furthermore, the research indicates a significant correlation.

6. Moreover: 此外，更正式的说法。例如：Moreover, the evidence supports his claim.

7. In addition: 除此之外，添加信息。例如：In addition to her beauty, she has great intelligence.

8. Likewise: 同样地，相似地。例如：The students were attentive, likewise, the teacher was enthusiastic.

9. Equally: 同样地，程度相同。例如：Both options are equally valid.

表示转折关系：

10. But: 最常用的转折连接词，表示对比或不同。例如：He is rich, but he is not happy.

11. However: 然而，更正式的but。例如：The weather was bad; however, we decided to go.

12. Nevertheless: 尽管如此，更正式的however。例如：Nevertheless, he persisted.

13. Nonetheless: 尽管如此，与nevertheless意思相近。例如：Nonetheless, the project continued.

14. Yet: 然而，与but类似，但语气更弱。例如：He tried hard, yet he failed.

15. Still: 仍然，表示与预期相反。例如：It was raining; still, they went out.

16. On the other hand: 另一方面，引出相反的观点。例如：On the other hand, there might be some benefits.

17. Conversely: 相反地，更正式的说法。例如：Conversely, some studies show different results.

18. Instead: 代替，表示替代方案。例如：Instead of going out, we stayed home.

19. Whereas: 然而，正式的but，常用于对比。例如：Whereas he prefers coffee, she prefers tea.

表示因果关系：

20. So: 因此，最常用的表示结果的连接词。例如：It was raining, so we stayed home.

21. Therefore: 因此，更正式的so。例如：Therefore, we must take action.

22. Thus: 因此，更正式的so，语气较强。例如：Thus, the experiment proved successful.

23. Hence: 因此，更正式的so，法律或学术语境常用。例如：Hence, the contract is valid.

24. Consequently: 因此，结果是。例如：Consequently, the company faced bankruptcy.

25. As a result: 作为结果。例如：As a result, the team won the championship.

26. Because: 因为，表示原因。例如：I'm happy because you're here.

27. Since: 因为，语气比because弱，也可表示“自从”。例如: Since it was raining, we stayed inside. Since 2020, he has been working remotely.

28. For: 因为，语气较弱，常用于补充说明。例如: He went to bed early, for he was tired.

29. Due to: 由于，正式的because of。例如: The flight was delayed due to bad weather.

30. Owing to: 由于，与due to 类似，更正式。例如: Owing to unforeseen circumstances, the meeting was cancelled.

表示时间关系：

31. When: 当...的时候。例如: I'll call you when I arrive.

32. While: 当...的时候，与when类似，强调同时性。例如: While I was walking, I saw a friend.

33. As: 当...的时候，与when和while类似，表示伴随。例如: As he grew older, he became wiser.

34. Before: 在...之前。例如: I'll finish it before you arrive.

35. After: 在...之后。例如: After the meeting, we went for lunch.

36. Until: 直到...为止。例如: I'll wait until you're ready.

37. Till: 直到...为止，与until意思相同，但更口语化。例如: I'll wait till you get back.

38. Since: 自从。例如: I haven't seen him since last year.

39. As soon as: 一旦...就。例如: As soon as I finish, I'll call you.

40. Once: 一旦。例如: Once you start, you can't stop.

41. Whenever: 无论何时。例如: You can call me whenever you need help.

42. Now that: 既然。例如: Now that you're here, let's start.

表示条件关系：

43. If: 如果。例如: If it rains, we'll stay home.

44. Unless: 除非。例如: You won't succeed unless you work hard.

45. Provided that: 如果，条件是。例如: You can borrow my car provided that you drive carefully.

46. Providing that: 与provided that类似。例如: Providing that the weather is good, we'll go hiking.

47. As long as: 只要。例如: As long as you try, you'll be fine.

48. In case: 以防万一。例如: Take an umbrella in case it rains.

表示举例说明：

49. For example: 例如。例如: For example, consider the case of...

50. For instance: 例如，与for example意思相同。例如: For instance, look at the birds in the sky.

51. Such as: 例如，后面直接跟名词。例如: He enjoys activities such as hiking and swimming.

52. Like: 例如，比较口语化。例如: He enjoys fruits like apples and bananas.

53. That is: 也就是说，解释说明。例如: He is an artist, that is, he paints and sculpts.

表示强调：

54. Indeed: 确实，实际上。例如: He is indeed a talented musician.

55. Certainly: 当然，毫无疑问。例如: Certainly, I will help you.

56. Surely: 肯定地，确定地。例如: Surely, there must be a mistake.

57. In fact: 事实上。例如: In fact, he is my best friend.

58. Actually: 实际上。例如: Actually, I didn't know that.

表示总结：

59. In conclusion: 总之，结论是。例如: In conclusion, the research supports the hypothesis.

60. To conclude: 总结来说。例如: To conclude, we need to take action.

61. In summary: 概括地说。例如: In summary, the project was successful.

62. To summarize: 总结来说。例如: To summarize, we have discussed several key points.

63. Therefore: 因此 (也可以表因果关系，此处强调总结)

64. Thus: 因此 (也可以表因果关系，此处强调总结)

65. Hence: 因此 (也可以表因果关系，此处强调总结)

66. In short: 简而言之。例如：In short, we need to be more efficient.

67. On the whole: 总的来说。例如：On the whole, the experience was positive.

表示地点：

68. Where: 在...地方。例如：This is the restaurant where we first met.

69. Wherever: 无论在什么地方。例如：You can sit wherever you like.

表示目的：

70. So that: 为了。例如：Study hard so that you can get good grades.