以a開頭的形容詞有什么特征

　　They had relinquished all hope that she was alive.

　　他們已經完全不指望她還活著了。

　　Ed was alive with happiness.

　　埃德高興得眉飛色舞。

　　She had despaired of ever being rescued alive.

　　她那時對獲救生還已經絕望了。

　　They kept her alive on a life support machine.

　　他們用呼吸機維持她的生命。

　　I never expected to feel so alive in my life again.

　　我怎么也沒想到自己會再一次這樣活力煥發。