Word/Phrase: that is why
Translation: por eso
Pronunciation: pɔɾ ˈeso
That is why I am here - Por eso estoy aquí
That is why we need to leave - Por eso necesitamos ir
That is why she is happy - Por eso ella está feliz
That is why they called - Por eso ellos llamaron
That is why it is important - Por eso es importante