Example：

　　There was a small school gate.

　　Now there is a big school gate.

　　2) Look and say.

　　a) What can you see in Picture 1？

　　A small blackboard， small desks， small chairs …

　　What can you see in Picture 2？

　　A computer， a big blackboard， big desks， big chairs …

　　b) Find the differences.

　　Example：

　　There were small desks in the classroom before.

　　There are big desks in the classroom now.

　　c) Practice in pairs.