英语语法：8 Excessive Redundant Redundancies

（单词翻译）

Grammar Girl here.

Today's topic is redundant¹ acronyms³.

Some of you know that I'm a working writer. I've had some big deadlines over the last few weeks, so that's why there haven't been as many episodes out; but my work is always a huge inspiration for the show, and this week was no exception. I came across a great example of a redundant abbreviation.

I was writing about a scientific experiment, and I found myself writing the phrase PCR reaction; and then I realized that PCR stands for polymerase chain reaction, so I had just written polymerase chain reaction reaction, which is obviously redundant. Yet, I've heard people say it that way a lot: “They ran a PCR reaction,” or “After running the PCR reaction, transfer the amplicon,” or something like that. There's just something to the ear that sounds wrong about ending a sentence with that acronym², but it's the right way to do it.

So I started thinking about other abbreviations that lure⁴ people into redundancy. I've definitely heard people say PIN number, which is redundant because the n in PIN stands for number, so they've just said personal identification number number. HIV virus is another one that comes to mind. The v stands for virus.

I went searching and found a couple of websites that list a whole bunch of commonly used redundant acronyms and phrases, so I'll put a link to those in the transcript⁶ at quickanddirtytips.com.

The important thing to remember is that when you are using an acronym, take a second to think about what words it stands for so that you don't add redundant words at the end.

Poll Results

Next, the results are in from the Schoolhouse Rock survey. One hundred and twenty people took the poll and 45% said that Conjunction Junction⁷ was their favorite episode; 13% had no idea what I was talking about, and the rest of the responses were split pretty evenly between* the other choices.

Take The Survey

That's all. As always this is Grammar Girl, striving to be your friendly guide in the writing world. This week, I have a favor to ask. I'm trying to find a sponsor for this show, so that I can regularly put out four or five shows a week and put a dent⁵ in the backlog⁸ of listener questions that is increasing at a truly amazing rate. So, if you'd like to see more episodes, please take a minute to complete the listener survey on the Grammar Girl page of QuickAndDirtyTips.com. It's the blue box at the top of the sidebar that says Audience Survey. It's completely anonymous⁹, and it will allow me to show potential partners audience demographics, which will really help a lot.