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E）","說明",[42,43,44],"Em（E 小調）","022000","兩根手指。吉他上最簡單的和弦。",[46,47,48],"Am（A 小調）","x02210","和 E 一樣的手型，往下移一條弦。",[50,51,52],"E（E 大調）","022100","Em 再加一根手指按 G 弦。",[54,55,56],"A（A 大調）","x02220","三根手指並排按在第 2 格。",[58,59,60],"D（D 大調）","xx0232","只刷最細的四條弦。",[62,63,64],"C（C 大調）","x32010","一開始手指會有點撐；手指要拱起來。",[66,67,68],"G（G 大調）","320003","六條弦全刷。",[70,71,72],"Dm（D 小調）","xx0231","和 D 很像，只是最上面那根手指往回移一格。",[74,75,76],"G7","320001","和 G 很像，高音 E 弦改按第 1 格。",[78,79,80],"F（F 大調）","133211","完整的封閉和弦：食指壓住全部六條弦。最後再學。",[82],"在[線上吉他](\u002Fmusic\u002Fguitar)上選一個和弦，就能在指板上看到按法、聽到它該有的聲音——再照著在自己的吉他上按。",{"h2":84,"steps":85},"學習順序",[86,87,88,89,90,91],"**Em 和 Am**——手指少，兩個一起彈也很好聽。","**E 和 A**——和 Em、Am 手型一樣，多一根手指。","**D**——只彈四條弦的短和弦；很多歌都從它開始。","**G 和 C**——每個人都需要的兩個和弦；多練習兩者之間的轉換。","**Dm 和 G7**——在你已經會的按法上做一點小變化。","**F**——第一個封閉和弦。如果完整的封閉會有雜音，先從只按最細四條弦的簡易版（xx3211）開始。",{"h2":93,"table":94},"練習用的和弦進行",[95,98,102,106,110,114,118],[96,38,97],"和弦進行","為什麼練它",[99,100,101],"三和弦搖滾","G – C – D","無數首歌的骨架",[103,104,105],"流行歌進行","C – G – Am – F","超多流行歌都用它",[107,108,109],"小調感","Am – F – C – G","同樣四個和弦，從 Am 開始",[111,112,113],"抒情歌","Em – C – G – D","轉換簡單，聲音很飽滿",[115,116,117],"民謠","D – G – A","三個開放和弦，轉起來很順",[119,120,121],"經典迴轉","C – Am – Dm – G7","結尾會自然地拉回 C",{"h2":123,"list":124},"怎麼練",[125,126,127,128,129],"**一分鐘換和弦**：挑兩個和弦，連續轉換一分鐘，數一數乾淨換過去幾次。每天練，看著次數往上爬。","**每個和弦刷四下**：往下刷四次，換和弦，再重複。就算換得不完美也繼續彈下去。","**開節拍器**，用慢的速度，大約 60–70 BPM。","**按在琴格稍後面**，不要壓在琴衍正上方，這樣就不會有雜音。","**錄下自己**：在[線上吉他](\u002Fmusic\u002Fguitar)上按錄音、刷一段和弦進行，再回放聽聽。儲存這段錄音，就能匯出附六線譜的樂譜。",{"title":131,"items":132},"常見問題",[133,136,139,142,145],{"q":134,"a":135},"最簡單的吉他和弦是哪個？","E 小調（022000）：兩根手指按在第 2 格，六條弦全刷。",{"q":137,"a":138},"初學者應該先學哪些和弦？","Em、Am、E、A、D、C 和 G。它們都是開放和弦，合起來就能彈大部分的入門歌曲。",{"q":140,"a":141},"F 為什麼這麼難？","它是封閉和弦：一根手指要在第 1 格壓住全部六條弦。先從簡易版 xx3211 開始，之後再回來練完整的封閉。",{"q":143,"a":144},"學會基本和弦要多久？","每天短短練一下，大多數人幾週內就能在最初幾個開放和弦之間轉換。要換得又乾淨又快需要更久——慢慢練就對了。",{"q":146,"a":147},"沒有吉他可以練嗎？","可以在線上吉他上學按法、聽聲音，但手指要在真的樂器上才練得出力氣和繭。",[149,153,157,161,165,169,173],{"slug":150,"title":151,"description":152},"how-to-draw-a-floor-plan-online","怎麼線上畫平面圖：一步一步教你","在瀏覽器裡按比例畫平面圖：先丈量房間，用精確長度畫牆，放入門窗和家具，再標上尺寸，匯出 PNG、按比例 PDF 或 DXF。",{"slug":154,"title":155,"description":156},"floor-plan-symbols","平面圖符號與圖例說明","平面圖上的線代表什麼：門的開啟線、推拉門、窗、樓梯、家具、指北針、比例尺和剖面線符號——附免費 SVG 圖例下載。",{"slug":158,"title":159,"description":160},"furniture-sizes-for-floor-plans","平面圖常用家具尺寸","床、沙發、餐桌、書桌、衣櫃、廚房和衛浴設備的常見尺寸，以及周圍要留多少空間——以公分標示，畫平面圖時直接用。",{"slug":162,"title":163,"description":164},"section-hatch-patterns","剖面材質填充圖樣：每一種代表什麼","建築剖面圖裡的材質填充代表什麼——混凝土、磚、土壤、隔熱材、木材、碎石——什麼時候用哪一種，以及怎麼讓剖面圖好讀。附免費 SVG 填充圖例。",{"slug":166,"title":167,"description":168},"sketch-on-a-phone-or-tablet","不用安裝 App，在手機或平板上畫草圖","直接在瀏覽器裡用 iPad、Android 平板或手機畫畫：支援 Apple Pencil 壓感、手掌可以靠著、雙指縮放、匯出 PNG——免費，免裝 App。",{"slug":170,"title":171,"description":172},"play-piano-on-a-computer-keyboard","怎麼用電腦鍵盤彈鋼琴","哪個電腦按鍵對應哪個鋼琴音、怎麼切換八度和用延音踏板，還有用筆電鍵盤在線上鋼琴就能彈的簡單歌曲和和弦。",{"slug":174,"title":25,"description":27},"easy-guitar-chords-for-beginners",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":176},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"m9 6l6 6l-6 6\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":178},"\u003Cpath fill=\"currentColor\" d=\"M12 7a5 5 0 1 1-4.995 5.217L7 12l.005-.217A5 5 0 0 1 12 7\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":180},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M14 12v.01M3 21h18M6 21V5a2 2 0 0 1 2-2h8a2 2 0 0 1 2 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