首先我们来看下thereby和therefore的大致意思：

thereby：词性为副词，thereby是一个副词，常用于正式场合，表示通过某种方式或手段产生的结果。

therefore：词性为副词，therefore是一个副词，常用于口语和书面语中，表示由前面所述的事实或原因而导致的结果，表达因果关系或逻辑推理。

通过下面的表格我们了解下thereby和therefore的含义、发音和用法

接下来让我们看下thereby和therefore的用法区别：

1.词性：thereby是副词，而therefore也是副词。

例子：

- They worked hard and thereby achieved success.

(他们努力工作，thereby取得了成功。)

- He was late in the morning and therefore missed the train.

(他早上迟到了，therefore错过了火车。)

2.含义：thereby表示通过某种方式或手段产生的结果，而therefore表示由前面所述的事实或原因而导致的结果。

例子：

- They improved their grades through diligent study, thereby earning scholarships.

(他们通过勤奋学习提高了成绩，thereby获得了奖学金。)

- The weather forecast indicates rain, therefore we should bring an umbrella.

(天气预报显示会下雨，therefore我们要带雨伞。)

3.发音：thereby的英式发音是/ˌðeəˈbaɪ/，美式发音是/ˌðɛrˈbaɪ/；而therefore的英式发音是/ˈðeəfɔː(r)/，美式发音是/ˈðɛrfɔr/。

例子：

- They worked hard and thereby achieved success.

(他们努力工作，thereby取得了成功。)

- He was late in the morning and therefore missed the train.

(他早上迟到了，therefore错过了火车。)

4.用法简介：thereby常用于正式场合，表示通过某种方式或手段产生的结果；而therefore常用于口语和书面语中，表示逻辑推理、因果关系。

例子：

- They improved their grades through diligent study, thereby earning scholarships.

(他们通过勤奋学习提高了成绩，thereby获得了奖学金。)

- The weather forecast indicates rain, therefore we should bring an umbrella.

(天气预报显示会下雨，therefore我们要带雨伞。)