To present one's own viewpoint in Engpsh, you can use the phrase "to express one's opinion" or "to state one's position."
For example:
"I'd pke to express my opinion on this matter."
(我想表达我对这件事的看法。)
"I want to state my position clearly on this issue."
(我想明确地表明我在这个问题上的立场。)
You can also use the phrase "to argue one's point" to indicate that you are presenting a case or reasoning to support your opinion.
For example:
"I'll argue my point by presenting evidence from multiple sources."
(我将通过提供多个来源的证据来辩护我的观点。)
"I'm going to explain why I think this is the best course of action, and I'll back up my argument with logical reasoning."
(我要解释我为什么认为这是最佳的行动方案，并用合理的推理来支持我的论点。)
It's important to note that these phrases are neutral and can be used in a variety of settings, including academic debates, discussions in meetings or classes, and casual conversations.