whether位于句首引導什么從句

　　All she's worried about is whether he is all right.

　　她所擔心的只有他是否都好。

　　Your lawyer can advise you whether to take any action.

　　你的律師可以告訴你是否起訴。

　　I hear you're taking bets on whether she'll marry him.

　　我聽說你愿意拿她是否會嫁給他的事和人打賭。