The simplest way to cut pasta is to cut it into strips. You can use your pasta machine if it has an attachment, but if not, you can cut the pasta easily using a smooth kitchen knife or pizza cutter.  Create lasagna noodles by cutting the pasta into 3-inch (7.6-cm) strips. Capellini and fettuccine strips are only about 1 inch (2.5 cm) wide, if not smaller. Spaghetti noodles are the thinnest and should be less than 1/4 inch (6.35 mm) wide. Garganelli pasta is shaped like small tubes.  Cut the pasta into 2 to 3 inch (5 to 7.6 cm) squares using a knife or pizza cutter. Wrap each square around a clean wooden skewer or chopstick. Press the overlapping corners together to form the tube shape. Farfalle pasta is better known as "bow tie" pasta.  Cut out rectangles measuring roughly 3 inches (7.6 cm) long and 2 inches (5 cm) wide. Use a knife or pizza cutter. Pinch the rectangles together in the middle. Toss your pasta in flour as soon as you finish forming it. This is especially important if you plan on drying and saving the pasta. Otherwise, the pasta will stick together as it dries.

TL;DR in Chinese:
将意大利粉切成条状。 制作坑纹通粉。 做蝴蝶结面。 用面粉包裹你的意大利面。