that is why用法

釋義：這就是為什么，因此

That's why I was getting married. ---《老友記》 第一季 第一集

這就是我為什么結婚的原因。

例句：

1. Mr. Gorbachev, on the other hand, recognized that his sluggish and authoritarian bureaucracy was the worst impediment to modernization. That is why the Soviet leader came more quickly to the view that political and economic change must go hand in hand.

   在另一方面，戈爾巴喬夫承認，他的既迂腐又專權的官僚政府是現代化最大的阻礙。因此這位蘇聯領袖迅速意識到，政治與經濟改革必須齊頭并進。

2. And that is why in this field, I have made recommendations.

   為此，我在這方面提出了一系列建議。

3. That is why electricity finds such a wide application in industry.

   那就是為什么電在工業上得到這樣廣泛應用的原因。

4. That is why I am on intimate term with Mr. Aoki.

   那是我與奧基先生關系親密的原因。

注：

that is why后面跟的是結果,譯為：“那是（為什么）...... 的原因”
例如：
Tom overslept this morning. That is why he was late for work.
? 湯姆今天早晨睡過頭了。那是他上班遲到的原因。

that is because后面跟的是原因，譯為：“那是因為.......”
例如：
Tom was late for work this morning. That is because he overslept.
? 湯姆今天早晨上班遲到了。那是因為他睡過頭了。