学习英语语法不仅要记住概念，更要看例句，要在例据中来理解这个知识点的用法，通过仿写例句达到对知识点应用自如的水平，小编这次就为大家带来了一些定语从句的例句，快来看看吧。

A suitcase that doesn’t have handles is useless.

The blue suitcase ,which doesn’t have handles, is useless.

A shop should keep a stock of those goods which sell best.

This is the family which is planning to move to the city.

This is a reason which we must not forget.

When deep in thought, which he often was, he would forget all around him.

He bought a book, which was written by LuXun, and which he decided to give to his friend.

There is a special parasite which gives rise to the itch.

He who laughs last laughs best.

She is the girl that talked to you yesterday.

The coat (that) I put on the desk is blue.

I'd like a room whose window looks out over the sea.

He isn’t such a man as would leave his work half done.

The smiling boy needs a friend.

A boy called Tom saved the girl.

He is the man that I met yesterday.

This is an old computer which hat  works much slower.

They stayed with me for three weeks  during which time they drunk all the wine I had.

The picture (that) we are looking at  was drawn by a fifteen-year-old student.

The picture at which we are looking  was drawn by a fifteen-year-old student.

I have many students to whom I am  going to send postcards.

以上就是这次为大家带来的定义从句的例句了，大家可以细心品味每一句话，找出其中的难点，好好的研究出它们的用法，总结出其中的规律，相信只要长期坚持下来，就一定会让你的英语有一个大提高的。