I want to express my true feelings.

　　我想表達(dá)我的真實感受。

　　They want to express thanks to some filmmakers.

　　他們想向一些制片人表示感謝。

　　I want to express my thanks to you for coming again!

　　我想對您再次光臨表示感謝！

　　I want to express my admiration for you because you never give up in the face of difficulties.

　　我想要向你表達(dá)我對你的欽佩之情，因為你在困難面前從不放棄。