这篇教程是向易采站长站的朋友介绍AI绘制一个逼真立体感的红色救生圈方法，教程属于入门级别的教程，推荐过来，大家一起来学习吧！
下面先来看看最终的效果图：
具体的绘制步骤如下：
Step 1
First, create a new document in Illustrator at 800 pixels by 600 pixels. Enable the Ruler (Ctrl+R) and turn on the grid on (Ctrl+"). Then drag a horizontal and a vertical guide onto the artboard.
We’ll start by creating our shapes. Select the Ellipse Tool (L), and click on the center point of our guides. Then drag outwards by holding down the Shift + Ctrl keys. This will give us a circle that is centered on the grid/guides. Fill the circle with a red color (R=190 G=28 G=35) and leave the stroke empty.
1. 首先，新建Illustrator文档，800*600px。显示标尺(Ctrl+R)，并且显示网格(Ctrl+")。然后鼠标拖拉水平和垂直参考线到画板。
我们先创建形状。选择椭圆工具(L)，在参考线的中点单击。然后按住Shift + Alt键向外拖拉。这样绘制的圆以水平和垂直参考线的交叉点为中心。圆填色：红色(R=190 G=28 G=35)，描边无。
Step 2
Create another circle, as in the previous step. Then make it about 75% smaller then the first circle. Give it another color so it is easy to see. Select both circles, open the Pathfinder Palette, and click on the Divide Tool. Deselect the shapes, then re-select the smaller circle, and then delete it.
2. 创建另一个圆，同之前的步骤。这个圆是第1个圆的75%。填充另一个颜色，使它可见。同时选择这2个圆，打开路径查找器面板，单击分离工具。取消选择所有形状，然后再选择小圆（译者注：使用编组选择工具选择），然后按Del键删除。
Step 3
Create a rectangle about 25px wide by 600px high. Then fill it with white and leave the stroke empty. Select both the circle and the rectangle with the black arrow tool. Click one time on the circle (to indicate that this is your base for alignment).
Then open the Align Palette. Click on the Horizontal Center Button and then on the Vertical Center Button. This will center the rectangle with the circle. Now repeat this step and set it perpendicular to the first rectangle. Select both of the rectangles and rotate them 45 degrees.
3. 绘制一个25*600px的矩形。然后填色：白色，描边：无。使用白箭头工具选择（译者注：直接选择工具）圆和矩形。在圆上单击一下（表示这是你对齐的参照物）。
