Expressing disbelief and surprise

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commonly used in wh

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questions to express disbelief or

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surprise

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for example

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what the [ __ ] is going on

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who the [ __ ] does he think he is

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when introducing someone to another

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person you can use different phrases and

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structures to do so

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one common way is to use the phrase this

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is followed by the name of the person

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you are introducing

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for example if you are introducing your

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friend Alex to your colleague Mary you

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might say

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Mary this is my friend Alex

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using this is is a straightforward and

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polite way of making an introduction and

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it is commonly used in both formal and

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informal