He was born in May in 1987. (√)

五、定冠词不能用在表示称呼语或某些头衔的名词前面(尤其作表语、宾补时)。例如：

1. Good morning， the sir!(×)

Good morning， sir! (√)

2. I need some help， the Mummy.(×)

I need some help， Mummy.(√)

六、定冠词不能与名词前已有作定语用的this， that， my， your， some， any等代词连用。例如：

1. This the pen is mine. (×)

This pen is mine.(√)

2. I have the some money. (×)

I have some money. (√)

   七、定冠词不能用在表示科目名词的前面。例如：