日本人が英語でやりがちな失敗 / Common mistakes in English that Japanese people tend to make

by LINE Developers

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೔ຊਓ͕ӳޠͰ ΍Γ͕ͪͳࣦഊ Lossa Roman // Developer Content Team 2022/07/14

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Self-Introduction Frequent WRITING Mistakes Frequent GENERAL Mistakes Frequent SPEAKING Mistakes 01 02 03 04 Contents 2

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Roman Lossa • Roman(first name),Lossa(last name) • Role : Frontend engineer • In charge of : developers.line.biz(LINE Developers site) • Presented at TWM vol.3,vol.14 • Made in Germany(Frankfurt) • Moved to Japan 7 years ago • Loves Vue.js,YouTube,Traveling 3

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Frequent WRITING Mistakes ॻ͍ͨΒ͍ܽͨ

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ʊਓਓਓਓਓਓਓਓਓʊ ʼɹطʹ12ݸͷϛεΛɹʻ   ʼɹͯ͠͠·ͬͨʂ😱ɹʻ ʉY^Y^Y^Y^Y^Y^Y^Yʉ ࣗݾ঺հͷεϥΠυͰ͸… 5

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About spaces εϖʔεΛೖΕΔέʔε

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Roman Lossa • Roman (first name), Lossa (last name) • Role: Frontend engineer • In charge of: developers.line.biz (LINE Developers site) • Presented at TWM vol. 3, vol. 14 • Made in Germany (Frankfurt) • Moved to Japan 7 years ago • Loves Vue.js, YouTube, Traveling 9 Correct!

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Two rules about spacing 1.୯ޠ͸εϖʔεͰ۠੾Βͳ͚Ε͹ͳΒ͵ 2.ه߸ʢΧοίɺ۟఺ɺίϯϚͳͲʣ͕  εϖʔεͷมΘΓʹͳΒ͵ 10

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How to apply? 1.શͯͷه߸Λফ͢ 2.୯ޠ͕εϖʔεͰ۠੾ΒΕ͍ͯΔ͔Ͳ͏͔Λ֬ೝ 3.ه߸Λ௥Ճ 11

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1. શͯͷه߸Λফ͢ • Romanfirst nameLossalast name • Role Frontend engineer • In charge of developers.line.bizLINE Developers site • Presented at TWM vol3vol14 • Made in GermanyFrankfurt • Moved to Japan 7 years ago • Loves Vue.jsYouTubeTraveling 13

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2. ୯ޠ͕εϖʔεͰ۠੾Β Ε͍ͯΔ͔Ͳ͏͔Λ֬ೝ • Roman first name Lossa last name • Role Frontend engineer • In charge of developers.line.biz LINE Developers site • Presented at TWM vol 3 vol 14 • Made in Germany Frankfurt • Moved to Japan 7 years ago • Loves Vue.js YouTube Traveling 14

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• Roman (first name), Lossa (last name) • Role: Frontend engineer • In charge of: developers.line.biz (LINE Developers site) • Presented at TWM vol. 3, vol. 14 • Made in Germany (Frankfurt) • Moved to Japan 7 years ago • Loves Vue.js, YouTube, Traveling 15 3. ه߸Λ௥Ճ

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Mind the spell checker ੺ઢ΁໨ઢΛ

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Spell checkerʹ஫ҙ ੺͍ઢΛແࢹͯ͠͸͍͚ͳ͍ʂ (ಛʹεϖϧϛεͷ৔߹) Before:   After: 17

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About “double quotes” ൽ೑͕ڹ͘

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ྫจ ࢲ͕੔උ੹೚ऀͰ͢ɻ  ʮ҆৺ʯʮշదʯͳ ۭͷཱྀΛָ͓͠Έ͍ͩ͘͞ɻ 19 Please enjoy our “Safe” and “Comfortable” flight. ~Your aircraft maintenance manager in charge 🙆 😂🤦

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ྫจ ࢲ͕੔උ੹೚ऀͰ͢ɻ  ʮ҆৺ʯʮշదʯͳ ۭͷཱྀΛָ͓͠Έ͍ͩ͘͞ɻ 20 Please enjoy our “Safe” and “Comfortable” flight. ~Your aircraft maintenance manager in charge 🙆 😂🤦

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ྫจ ࢲ͕੔උ੹೚ऀͰ͢ɻ  ʮ҆৺ʯʮշదʯͳ ۭͷཱྀΛָ͓͠Έ͍ͩ͘͞ɻ 21 Please enjoy our safe and comfortable flight. - Your aircraft maintenance manager in charge 🙆 🙆

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How to emphasize // Ͳ͏΍ͬͯڧௐ͢Δͷʁ • Italic: Basic emphasis. Use this! ✅ • Bold: When you need a stronger emphasis than  italic. This is super important! 📣 • Underline: Looks like a web link. Do not use! 🙅 • CAPS LOCK: AVOID AT ALL COSTS! 📣📣📣🙅 • Double quotes: 🤦 22

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23 Ҿ༻ͳΒେৎ෉Ͱ͢ʂ

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Web Development ։ൃͰӳޠരൃ

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word-break: break-all; CSS ӳޠද͕ࣔͿͬյ͞Ε͍ͯͯ ಡΈਏ͍ 25 😱

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word-break: break-all; CSS ӳޠද͕ࣔͿͬյ͞Ε͍ͯͯ ಡΈਏ͍ 26

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word-break: break-all; 27 CSS

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word-break: break-all; CSS word-break: ೔ຊޠͰͷൺֱ 28 word-break: break-all;

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Frequent GENERAL Mistakes Ұൠతͳఢ

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Articles ףࢺʹؔͯ͠

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31 ஫ҙ • ףࢺ͸ෳࡶ • ೔ຊޠͷʮ͸ʯͱʮ͕ʯͷҧ͍Λઆ໌Ͱ͖Δʁ • ʮࢲ͕΍Δʯʮࢲ͸΍Βͳ͍ʯͳͲ… • ףࢺ΋ࣅ͍ͯΔΑ͏ʹ΍΍͍͜͠ͷͰɺ  ࠜຊతͳͱ͜Ζ͔͠঺հͰ͖ͣ m(_ _)m

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WRONG examples • I want to eat hamburger • Do you have a time? • She lives in the Tokyo 32

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Correct • I want to eat a hamburger (ෆఆףࢺ a) • Do you have time? (ףࢺແ͠) • She lives in Tokyo (ףࢺແ͠) 33

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໎͍΍͍͢ͱ͜Ζ 1. ףࢺ͚ͭΔ͔ vs. ͦ΋ͦ΋͚ͭͳ͍͔ 2. ෆఆףࢺ (a, an) vs. ఆףࢺ (the) 34

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ףࢺΛ͚ͭͳ͍৔߹ • ਺͑ΒΕͳ͍෺ • I need sugar • Do you have time? • ਓ໊ɺ஍໊ • I met Yazaki-san • He lives in Japan • Ұൠతͳ͓࿩͠ • German people like beer 35

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ෆఆףࢺ • ෳ਺͋Δʢ਺͑ΒΕΔʣ෺ͷதͷͲΕ͔ • Could I have a piece of sugar please? • Do you have a good time? • I prefer living in a city 36

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ఆףࢺ • ಛఆͳ෺ • Could you pass me the sugar, please? • I’m having the time of my life • Tokyo is the biggest city in Japan 37

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Frequent SPEAKING Mistakes ΧϞϯൃԻ

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Katakana is bad for you ϚδͰϩʔϚࣈ

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Katakana is bad for you • afternoon vs. yahoo  Ξϑλψʔϯ vs. Ϡϑʔ • ‘estimate’ vs. ‘yesterday’  ΤεςΟϝʔτ vs. ΠΤελσʔ 40 a != ya e != ye

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Katakana is bad for you • ear vs. year  ΠϠ vs. ΠϠʔ 😱 41 i != yi (ൃԻ) ΧλΧφΛଔۀ͠ͳ͍ͱ Ξ΢τ

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Katakana pronunciation differs Ի͕ҟͳΔ

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ΧλΧφൃԻ͕ຊ෺ͱ͔ͳΓҧ͏ • ϋϦ΢ου vs. Hollywood • ϚϧνόΠτ vs. Multibyte • ϋΠδ vs. Heidi 43

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ࣗ෼ͷจࣈΛ΍Ίͳ͖Ό • ೔ຊޠͷษڧɿϩʔϚࣈΛ΍Ίͳ͖Ό kare ha toukyou ni sunde imasu. • ͔Ε ͸ ͱ͏͖ΐ͏ ʹ ͢ΜͰ ͍·͢ɻ 44 • ೔ຊޠͷษڧɿϩʔϚࣈΛ΍Ίͳ͖Ό kare ha toukyou ni sunde imasu. • ͔Ε ͸ ͱ͏͖ΐ͏ ʹ ͢ΜͰ ͍·͢ɻ 👀

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ࣗ෼ͷจࣈΛ΍Ίͳ͖Ό • ೔ຊޠͷษڧɿϩʔϚࣈΛ΍Ίͳ͖Ό kare ha toukyou ni sunde imasu. • ͔Ε ͸ ͱ͏͖ΐ͏ ʹ ͢ΜͰ ͍·͢ɻ • ӳޠͷษڧɿΧλΧφΛ΍Ίͳ͖Ό γʔ Ϧϒζ Πϯ τ΢Ωϣ΢ɻ • She lives in Tokyo. 45 • She lives in Tokyo. 👀 ΧλΧφΛଔۀ͠ͳ͍ͱ Ξ΢τ

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The many faces of Μ ઉΛԼʹͨͯ͘͠΋…

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The many faces of Μ • ೔ຊޠͷʮΜʯ͸ൃԻ͕4ͭʢҎ্ʁʣ͋Δ 1. ઌഐɾͤΜͺ͍ɹˠɹm 2. બ୒ɾͤΜͨ͘ɹˠɹn 3. ࢀՃɾ͞Μ͔ɹɹˠɹng 4. ݪҼɾ͛Μ͍ΜɹˠɹᐆດͳṖͷԻ ɹɹɹɹɹɹɹɹɹɹʢӳޠʹ͸ଘࡏ͠ͳ͍ʣ 47

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ాத͞Μ / Tanaka-san 48 👅 👅

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1. ઌഐɾͤΜͺ͍ɹˠɹm 2. બ୒ɾͤΜͨ͘ɹˠɹn 3. ࢀՃɾ͞Μ͔ɹɹˠɹng 4. ݪҼɾ͛Μ͍ΜɹˠɹᐆດͳṖͷԻ 49 ాத͞Μ / Tanaka-san

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• ϫϯɺςϯɺαϯɺϚϯɺ΢ʔ ϚϯɺϓϩςΠϯɺαϯʢϑϥ ϯγείʣɺϫΠϯɺϥΠϯ Beware of the ending “n”! 50 👅 👅 • one, ten, sun, man, woman, inflation, protein, San (Francisco), wine, LINE ✅ 🙆 ❌ 🙅

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1. ઌഐɾͤΜͺ͍ɹˠɹm 2. બ୒ɾͤΜͨ͘ɹˠɹn 3. ࢀՃɾ͞Μ͔ɹɹˠɹng 4. ݪҼɾ͛Μ͍ΜɹˠɹᐆດͳṖͷԻ • ϫϯɺςϯɺαϯɺϚϯɺ΢ʔ ϚϯɺϓϩςΠϯɺαϯʢϑϥ ϯγείʣɺϫΠϯɺϥΠϯ Beware of the ending “n”! 51 • one, ten, sun, man, woman, inflation, protein, San (Francisco), wine, LINE 🙆 🙅 ޠඌͷʮnʯͷൃԻΛҙࣝ͠·͠ΐ͏ʙʂ