This is the thief who stole my bike把这个定语从句展开成两个句子

问题描述:

This is the thief who stole my bike把这个定语从句展开成两个句子
this is the thief
the thief is stole my bike 请问这样对吗?第二句要不要is

错了!
This is a thief.
The thief stoles my bike.