一件制服英语

an uniform ！

be in a set of uniform

wear a uniform 或 in a uniform / on a uniform , 具体看用在什么句子里,举例如下:1. She was well turned out in a brandnew uniform. 她穿着一般崭新的制服，显得非常漂亮。 2. That morning they all had on their army uniform. 那天早上他们都穿上了军服。

put on a set of uniform ,如果是说某人穿一件制服的话就这样，he(she) is in a set of uniform，希望能给你帮助

应该是：a uniform正向你所说的，“u”的音标在这里以辅音开头。用a还是an是看发音的。

a， uniform 开头的u，不是原音的，是音标 j （噎）。

a uniform，定冠词用 a 还是 an，是要看后面的单词的发音，发音以元音开头就用an，辅音开头就发a。尤其要注意很多单词以u开头，发音却是/ju/，即以辅音开头。