今天的《詞匯大師》討論的是英語口語中兩大特色：linking and blending連讀和合并。

連讀一般有兩種情況，一是將雙詞動詞連在一起念，如shut up——shutup；二是原因開頭的詞通常會和前一個詞連讀。

合并，當一個詞的尾音和一個詞的首個音節相似時就會把兩個詞合在一起讀。

AA: I'm Avi Arditti with Rosanne Skirble, and this week on Wordmaster — another lesson with Lida, our friend Lida Baker from the American Language Center at the University of California at Los Angeles. This time she explains two features of pronunciation that help create the sound of American English -- linking and blending.

BAKER: "Linking refers to the situation where you have a word that ends in a consonant and the next word starts with a vowel. And when that happens in English, we don't put any pause between the two words, but instead we link them or connect them so that they sound like one word. And a lot of times when this happens, it's in, for example, two-word verbs — where you have a verb followed by a preposition, so something like 'come over' becomes 'comeover.'"

RS: "Comeover to my house."

BAKER: "Right. There's a lot of examples I can give you that start with the word 'shut.' For example, 'shut up' becomes 'shutup.'"

RS: "Not very nice."

AA: "No."

BAKER: "Not very nice. 'Shut out' — 'shutout.'"

RS: "Keep someone away."

BAKER: "'Shut in' — 'shutin.'"

AA: "Someone who stays home all the time."

BAKER: "And what do we do when the water is running?"

AA: "Shut off."

BAKER: "'Shutoff,' right. So all of those are examples of words that end in consonants — the 't' sound — and the next word starts with a vowel. So we run them together and they sound like one word. Here's a great example where you have a whole sentence where one word ends in a consonant and the next one starts in a vowel: 'put it in a box.' Imagine how that sounds to a person who is learning English. They can read it: 'put-it-in-a-box.' But when we're talking fast, that's not how we say it, right? We say 'putitinabox.'"

RS: "It sounds like 'pudding in a box,' that you eat."

BAKER: "There you go, and it would be very confusing for someone learning English to try to tell those two things apart. Now, linking also occurs when you have words that end in vowels and the next word begins with a vowel. And in that case, we sometimes insert like a little 'y' sound or a little 'w' sound between them. So an example of that would be something like 'the end of.' That's what we would read. But we say 'thee-YEN-dov."

RS: "Thee-YEN-dov the year."

AA: "Thee-YEN-dov the book."

BAKER: "Right. And here are some phrases where there's a little 'w' sound between the two words: 'you are late.'"

RS: "You're late."

BAKER: "You can contract it and say 'you're' but you can also say 'yew-whar, yew-whar, yew-whaaar.' Hear that 'w'?"

AA: "Uh-huh."

BAKER: "Or 'show-wus, show-wus.' Or 'how-whar you?' It's actually not that hard for people to understand this second case of linking between vowels, but it's the consonant-to-vowel situation where sometimes it's very hard to tell where one word starts and the other word ends.

"Now, blending means that when you have a word that ends in a sound and the next word starts with the very same sound — and then it's again very hard to tell where one word ends and the next one starts. So, for example, 'bad day,' 'badday.' 'June ninth, Juneninth,' 'hot tea, hottea.' And then there are some very common ones like 'phone number,' 'left turn,' 'orangejuice.' What do you think that is?"

RS: "Orange juice."

BAKER: "Right, very hard to separate the two words. And you know you can tell how normal it is when you hear it done unnaturally. I went to a choir rehearsal to hear this big professional choir rehearsing. They were working on 'America the Beautiful.' And the director told them to put a little separation between every word. So what came out was something like this: 'Oh beautiful-uh for spacious-uh skies-uh.' You see how unnatural that sounds?"

RS: "But you're saying it. When you sing it, it sounds a lot different."

AA: "How did it sound when they sang it?"

BAKER: "He told them to sing it that way, because he wanted the audience to be able to make out every word. So he had them over-enunciate on purpose."

AA: "Did it sound OK?"

BAKER: "Well, it made it very easy when they were singing to understand the words, yes. But you would never talk that way. You would say: 'Oh beautiful, for spacious skies, for amber waves of grain,' not 'for amber-uh waves-uh of grain-uh.'"

AA: Author and English teacher Lida Baker suggests one way to learn the differences between written and spoken American English is through the Internet — by listening and reading along with radio scripts. You'll find our programs at voanews.com/wordmaster, and our e-mail address is word@voanews.com. With Rosanne Skirble, I'm Avi Arditti.