earth出现频率180次以上。托福考的是什么？就是两个字“常用”。很显然人类对于自己所生活的这片土地还是很感兴趣的，所以earth这个单词出现的频率极高。但是不要被数字迷住了眼睛，要知道其实这个单词有一个固定搭配也经常出现，那就是on earth，它的意思是“到底、究竟、在世上”这个可要引起你们的注意哦！
earth / ɜːθ; əθ/ n
(usu 通常作 the earth) [sing] this world; the planet on which we live 世界; 地球: The moon goes round the earth. 月球环绕地球运转. * I must be the happiest woman on earth! 我一定是世界上最幸福的女人了.
[sing] land; the surface of the world as opposed to the sky or sea 大地; 陆地; 地面: After a week at sea, it was good to feel the earth under our feet again. 出海一周後, 又重新回到陆地上而感到愉快. * The balloon burst and fell to earth. 气球破裂而落到地上.
[U] soil 泥土: a clod/lump of earth 土块 * fill a hole with earth 用泥土填洞 * cover the roots of a plant with earth 用泥土把植物的根埋起来. =>Usage 见所附用法.
[C] hole of a wild animal, esp a fox or badger （野兽的, 尤指狐狸或獾的）洞穴; 兽穴.
[C usu sing 通常作单数] (esp Brit) (US ground) (wire that provides a) connection with the ground completing an electrical circuit 接地; 地线.
[C] (chemistry 化) any of several metallic oxides 几种金属氧化物之一: an alkaline earth 硷土金属氧化物 * rare earths 稀土金属元素.
(idm 习语) charge, cost, pay, etc (sb) the `earth (infml 口) charge, etc a lot of money 要付...很多钱: I'd love that bike, but it costs the earth. 我很喜欢那辆自行车, 可是贵得不得了. come back/down to `earth (with a bang/bump) (infml 口) stop day-dreaming; return to reality 不再做白日梦; 回到现实中来: When his money ran out, he came down to earth (with a bump). 他把钱用光时, 才（赫然）如梦初醒. the ends of the earth => end1. the four corners of the earth => corner. go/run to earth/ground hide oneself away to avoid being captured, etc 躲藏起来以免被捉住等. how, why, where, who, etc on `earth/in the `world (infml 口) (used for emphasis 用以加强语气) how, etc ever 到底怎样...: What on earth are you doing? 你到底在干什麽呢? * How on earth did she manage that? 她究竟怎麽办到的呢? (be, feel, look, etc) like nothing on `earth (infml 口) very bad, unwell, peculiar, etc 糟糕﹑ 难受﹑ 特别极了等: He looks like nothing on earth in those weird clothes. 他穿着奇装异服难看极了. move heaven and earth => move2. promise the earth/moon => promise2. run sb/sth to `earth find sb/sth by searching hard 尽力追查某人[某事物]: The police eventually ran him to earth in Paris. 警察穷追不舍, 终於在巴黎找到了他. the salt of the earth => salt. wipe sth off the face of the earth/off the map => wipe.
> earth v
1 [Tn esp passive 尤用於被动语态] (esp Brit) connect (an electrical appliance, etc) with the ground 将（电器等）接地: Is this plug earthed? 这个插头接地了吗?
2 (phr v) earth sth up cover (the roots of a plant, etc) with earth 用土掩盖（植物等的根）: He earthed up the celery. 他给芹菜培上了土.
earthy adj (-ier, -iest) 1 of or like earth or soil 泥土的; 像泥土的; 土壤的; 像土壤的: an earthy smell 泥土的气味. 2 (fig 比喻) (of people, jokes, etc) coarse; not refined or sensitive （指人﹑ 笑话等）粗俗的; 不文雅的; 土里土气的: an earthy sense of humour 粗俗的幽默感. earthiness n [U].
# `earth science any of various sciences, such as geology or geography, concerned with the earth or part of it 地球科学（如地质学﹑ 地理学等）.
`earthwork n (formerly) large man-made bank of earth used as a fortification （旧时）土垒（用泥土筑成的大型防御工事）: the remains of ancient earthworks 古代土垒的残骸.
`earthworm n common type of worm that lives in the soil 蚯蚓（通称曲?）. =>illus at worm 见worm之插图. NOTE ON USAGE 用法: Compare earth, ground, floor and soil. 将earth﹑ ground﹑ floor﹑ soil这几个词作一比较. The earth (also Earth) is the name of the planet where we live and earth can also refer to the solid land in contrast to the sky above *the earth（亦大写作Earth）是我们赖以生存的地球的名称, earth还可指大地, 是相对於天空而言: The parachutist floated gently down to earth. 跳伞者轻飘飘地降落到地上. Ground indicates an area or distance on the earth's surface *ground指地面上的区域或距离: The expedition covered a lot of ground. 探险队到过很多地方. In addition, the ground is the solid surface under our feet when we are in the open air 此外, 当人们在露天活动时, the ground可用以指地面: You shouldn't sit on the ground when it's wet. 地面潮湿时就不应该坐在地上. The floor is the solid surface under our feet inside a building *the floor指建筑物内的地面: He left his clothes lying all over the floor. 他把衣服扔得满地都是. Ground, earth and especially soil refer to the natural material in which trees and plants grow. *ground﹑ earth﹑ 特别是soil, 均指土壤. Ground is an area of soil and earth *ground指土壤和土地的一个区域: stony ground 多石的地面 * black earth 黑土地 * sandy soil 沙土地.