On this page you can learn when you should use だからです in a sentence.
だからです means ‘It is because’.
Rule
だからです is used after なadjective or noun.
Example
1
It is because the man is quiet.
↓
その男の人はしずかだからです。
しずか in the sentence above is なadjective. It is しずかな as Dictionary Form.
2
It is because tomorrow is my birthday.
↓
明日は私のたんじょう日だからです。
私のたんじょう日 means ‘my birthday’, which is a noun.
Note: からです
Use からです if you have a verb or いadjective in front of からです. Visit the page below for more details.
【Japanese grammar】からです(karadesu)= It is because: how to express reason
Let's learn how to say those sentences in Japanese: It is because chocolates are yummy. It is because my mother is kind. It is because Japan is beautiful. It is because I washed dishes.