教学目标
学会（对当前发生的事）做出推测和判断
（learn how to make inferences）
联系使用本单元的目标英语
（Practise using the target language.）
In this unit we will learn to use could，may，might，must and couldn’t/can’t to show how certain you are about a present situation.And tell the difference between them.We will also learn to practice“whose questions”.
一、目标语言（Target language）
1.Whose volleyball is this？
It must be Carla’s.She loves volleyball.
2.Whose French book is this？
It could be Ali’s.She studies French.
