1. 名詞
   地球
   全人類, 世界
   /以上限定單數the earth形態/
   限定不可數名詞:
   陸地, 地面
   地上
   泥土
   人世
   俗世, 塵世
   紅塵
   

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   同義字詞
   globe,planet,world
   dirt,dust,ground,land,soil,terra firma
   clod,dirt,ground,mold,soil
   big bucks,boodle,bundle,fortune,king's ransom,mint,pile,wad
   

2. 動詞
   不及物動詞:
   (被追捕的動物)藏在地下
   及物動詞:
   (英式)把...(電器)接地
   earth up:
   培土
   earth up ...(植物、根部等):
   用土掩蓋...
   /此動詞過去式與過去分詞為"earthed"/
   /現在分詞為"earthing"/
   

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3. 形容詞
   down to earth/
   down-to-earth:
   務實的
   樸實的
   謙遜的
   做人很實在的
   實際的
   (外表、味道、聲音等)like nothing on earth:
   很古怪的
   很不尋常的
   

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4. 副詞
   on earth:
   世界上
   地球上
   地表上
   (限放句首作問句)how on earth:
   到底如何
   究竟如何
   到底怎麼
   究竟怎麼
   到底怎樣
   

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5. 代名詞
   (限放句首作問句)what on earth:
   究竟什麼
   究竟什麼鬼東西
   到底什麼
   到底什麼鬼東西
   (限放句首作問句)who on earth:
   究竟誰
   到底誰
   (限放句首作問句)when on earth:
   究竟何時
   

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6. 感嘆詞
   the earth moved:
   床都塌了!
   達到性高潮!
   天搖地動!
   

7. 動詞片語連結
   come down to earth/
   come back down to earth/
   come down to planet earth/
   come back down to planet earth/
   come down to earth with a bump/
   come back down to earth with a bump/
   come down to earth with a thud/
   come back down to earth with a thud/
   come down to earth with a bang/
   come back down to earth with a bang:
   

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8. 名詞語法
   the best ...(人事物) on earth:
   地表最強...
   

9. 語法
   (問句)what on earth is/are ...(A: 人事物) ...(B: 動詞ing ...):
   (A)究竟在做(B)什麼?
   (A)到底在做(B)什麼?
   

例句

1. Oh yes Earth will, she thought.
2. What on earth is your complaint?
3. At least he seems down to earth .
4. The earth is made up of several layers.
5. Will a new Earth be born on 1 March 2013?
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