because是詞性

　　She had left him because of his drinking.

　　她離開了他，因為他酗酒。

　　They knocked off $60 because of a scratch.

　　因為有擦痕他們將價格降了60元。

　　John liked him because he was a nervy guy.

　　約翰喜歡他，因為他是個不怕事的家伙。