동영상
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Master Politeness Levels with Billy Go | #22: Asking to Speak Casually
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Master Politeness Levels with Billy Go | #21: Making Polite Requests
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Master Politeness Levels with Billy Go | #20: Mixing Politeness Levels Part 2
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Master Politeness Levels with Billy Go | #18: Talking to Yourself
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Master Politeness Levels with Billy Go | #19: Mixing Politeness Levels Part 1
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Master Politeness Levels with Billy Go | #16: Informal Grammar
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Master Politeness Levels with Billy Go | #17: Intro to the Plain Form
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Master Politeness Levels with Billy Go | #15: Casual Speech and ‘You’
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Master Politeness Levels with Billy Go | #14: Making Casual Speech
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Master Politeness Levels with Billy Go | #12: Humble Speech