cube/cubic/rectangle/oval/round/circle/angle/square/ring
记忆：
1. cube [ kju:b] n. 立方体, 立方 A cube of sugar can stop the boy crying. 男孩见了糖就不会哭了。
2. cubic [ 5kju:bik ] adj. 立方体的, 立方的 Water and gas are sold by the cubic meter.水和气是按立方米来算的。
3. angle [ 5AN^l] n. 角 Draw a sharp angle first.先画一个锐角。
4. . rectangle [ 5rektAN^l ] rect-angle n. 长方形, 矩形 The surface of our desk is an rectangle.我们的桌子表面是一个长方形。
5. square [ skwZE ] n. 正方形, 广场, 平方 The city should offer the civilian a spacious square.市里应向平民提供一个宽阔的广场。
6. oval [ 5EuvEl ] adj. 卵形的, 椭圆的 Don’t you think an oval face is more beautiful than a square one?你不认为椭圆形的脸比方形的脸更漂亮吗？
7. round [ raund ] adj. 圆的, 球形的 Balls are usually round, but a British football is oval.球通常是圆的，但英式足球却是椭圆的。
8. circle [ 5sE:kl ] n. 圆周, 圆形物 循环 v. 围, 环绕 Look! Some bees are circling the purple flower.看！一些蜜蜂正在围着那朵紫色的花转。
9. ring [ riN ] n. 环, 环形物, 戒指 The man prepared a diamond ring for her.那男子为她准备了一枚钻石戒指。
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