7种基础形状 + 美国小学生常用形状 完整复习表
| 英文单词 | 中文释义 | 核心例句 | 配套小题目 |
|---|---|---|---|
| circle | 圆形 | A circle is round with no corners. Like the Sun or a clock. | 1. 翻译：A circle is round. 2. 填空：A ____ has no corners. |
| square | 正方形 | A square has four equal sides and four corners, like a chessboard or a post-it note. | 1. 判断：正方形有3条边（） 2. 造句：I see a ____. |
| triangle | 三角形 | A triangle has three sides and three corners, like a slice of pizza or a traffic sign. | 1. 数字对应：triangle = ____ sides 2. 选图：哪个是triangle？ |
| rectangle | 长方形 | A rectangle has four sides and four corners. Two sides are long, two sides are short. Like a door or a book. | 1. 对比：rectangle vs square 2. 填空：A ____ has two long sides. |
| oval | 椭圆形 | An oval is like a stretched circle, with no corners. Like an egg or an olive. | 1. 冠词：____ oval（a/an） 2. 翻译：An oval is a stretched circle. |
| diamond | 菱形/钻石 | A diamond has four equal sides. It looks like a square turned a little, like some playing cards or shiny jewels. | 1. 描述：diamond像什么？ 2. 造句：It looks like a ____. |
| octagon | 八边形 | An octagon has eight sides and eight corners. Like a stop sign. | 1. 数字：octagon = ____ corners 2. 填空：An ____ is a stop sign. |
| star | 星形 | A star has five points. Like a star on the flag or a Christmas star. | 1. 填空：A star has ____ points. 2. 造句：I see a ____. |
| heart | 心形 | A heart has two rounded tops and a point at the bottom. Like a heart-shaped candy. | 1. 翻译：A heart is a love shape. 2. 填空：A ____ has a point at the bottom. |
| pentagon | 五边形 | A pentagon has five sides and five corners. Like a house roof or a traffic sign. | 1. 数字：pentagon = ____ sides 2. 冠词：____ pentagon（a/an） |
| hexagon | 六边形 | A hexagon has six sides and six corners. Like a honeycomb or a nut. | 1. 数字：hexagon = ____ corners 2. 对比：hexagon vs octagon |
| crescent | 月牙形 | A crescent is a curved shape like the moon. Like a crescent roll. | 1. 填空：A ____ is like the moon. 2. 造句：It looks like a ____. |
| trapezoid | 梯形 | A trapezoid has four sides, with one pair of parallel sides. Like a ladder or a roof. | 1. 填空：A trapezoid has ____ sides. 2. 描述：trapezoid有几对平行边？ |
| rhombus | 菱形（同diamond） | A rhombus has four equal sides, like a diamond or a kite. | 1. 对比：rhombus vs square 2. 造句：A ____ has four equal sides. |
| cone | 圆锥形 | A cone has a round base and a pointed top. Like an ice cream cone. | 1. 填空：A ____ has a pointed top. 2. 翻译：A cone is like an ice cream. |
| cube | 立方体 | A cube has six square faces. Like a dice or a box. | 1. 数字：A cube has ____ faces. 2. 造句：I see a ____. |
| sphere | 球体 | A sphere is a round 3D shape, like a ball or the Earth. | 1. 对比：sphere vs circle 2. 填空：A ____ is a 3D circle. |
| cylinder | 圆柱体 | A cylinder has two circular bases and a curved side. Like a can or a tube. | 1. 填空：A ____ has two circles. 2. 造句：A cylinder is like a ____. |
补充背诵小贴士（美国小学生版）
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新增发音速记
- trapezoid /ˈtræpəzɔɪd/：重音在首，记“特拉佩佐伊德”
- rhombus /ˈrɒmbəs/：重音在首，记“龙布斯”
- cone /kəʊn/：单音节，读“扣恩”
- cube /kjuːb/：单音节，读“克优布”
- sphere /sfɪə(r)/：单音节，读“斯菲尔”
- cylinder /ˈsɪlɪndə(r)/：重音在首，记“西琳德”
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易错点提醒
- rhombus 和 diamond 意思相同，都是菱形，美国课堂常用 rhombus
- sphere 是3D球体，circle 是2D圆形，别混淆
- trapezoid 只有一对平行边，rectangle有两对
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记忆法升级
- 按“维度”记：2D平面（circle、square、triangle等）；3D立体（cone、cube、sphere、cylinder）
- 按“边数”记：3边=triangle、4边=square/rectangle/diamond/rhombus/trapezoid、5边=pentagon、6边=hexagon、8边=octagon
- 特殊形状：star（5角）、heart（爱心）、crescent（月牙），结合生活实物记忆 常用颜色词（美国小学生高频）
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常用颜色词（美国小学生高频）
red（红）、yellow（黄）、blue（蓝）、green（绿）、pink（粉）、purple（紫）、orange（橙）、brown（棕）、black（黑）、white（白）、gray（灰）、gold（金）、silver（银）
