Now, I want to give you two strong and more formal verbs.

现在，我想告诉你们两个语气强烈且正式的动词。

There were seven classes of " strong" verbs and three of " weak" verbs, and their endings changed for number, tense, mood and person.

有七类“强” 动词和三类“弱” 动词，它们的词尾因数、时态、语气和人称而变化。

This is the better sentence, because " improved" is a power verb; it's a stronger verb and it makes you sound like a better candidate.

这是更好的句子， 因为“改进” 是一个强力动词； 这是一个更强的动词，它让你听起来像是一个更好的候选人。