4 sentences

1. 他用一把小刀削苹果。

   tā yòng yī bǎ xiǎo​dāo xiāo píng​guǒ.

   He used a small knife to peel the apple.

   Source: Dong Chinese Dictionary

2. 他正在用小刀削苹果。

   tā zhèng​zài yòng xiǎo​dāo xuē píng​guǒ.

   He is peeling an apple with a small knife.

   Source: Dong Chinese Dictionary

3. 这把小刀是用钢制成的。

   zhè bǎ xiǎo​dāo shì yòng gāng zhì​chéng de.

   This knife is made of steel.

   Source: Dong Chinese Dictionary

4. 他用小刀把绳子割断了。

   tā yòng xiǎo​dāo bǎ shéng​zi gē duàn le.

   He cut the rope with a small knife.

   Source: Dong Chinese Dictionary