He muffed his opening speech.

他搞砸了自己的开幕讲话。

She declaimed the famous opening speech of the play.

她慷慨激昂地朗诵了这出戏中著名的开场白。

Mr. Smith delivered the opening speech.

史密斯先生致开幕词。

He is invited to give an opening speech.

有人邀请他致开幕词。

Mr. . Smith delivered the opening speech.

史密斯先生致开幕词。