If you start to walk fast you'll soon start to feel nervous.

如果你开始走快点，你很快就会感到紧张。

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I arrived on a hot June morning too depressed to feel nervous.

我在6月的一个炎热的上午到那儿，因为心情非常沮丧竟不感到紧张了。

《新英汉大辞典》

It's natural to feel nervous, or shy in front of others at times.

有时在别人面前感到紧张或害羞是很自然的。

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You don't have to feel nervous because the people that are listening to you,

你不必因为谁在听你说话而感到紧张，

紧张是学英语的敌人 - SpeakingMax英语口语达人

It's OK to feel nervous, and no matter what I feel today, everybody else in the field feels exactly the same way I do.

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"I was told I was getting close to Yorkshire's highest individual score but I have been playing too long to feel nervous, " Lehmann said after his marathon innings.

BBC: SPORT | Cricket | Counties | Lehmann marathon lifts Yorkshire

To be honest, I wasn't sure Becky had the mustard to talk to a single guy in the bar, and I was starting to feel nervous for her.

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