"I will attentively psten to the lecture in Engpsh" 可以用这句话表示。

这个短语的来源是英语动词 "attend" 和形容词 "attentively" 的结合，"attend" 的意思是 "出席，参加"，"attentively" 的意思是 "专心致志地"。

下面是一些英文例句及其中文翻译：

I will attend the meeting attentively and take notes.
我将认真出席会议并做笔记。

She attends every class attentively and asks questions actively.
她认真参加每堂课并积极提问。

He always attends to his work attentively and efficiently.
他总是认真高效地工作。