He always does this

He always does this
原文：What had happened to the writer's bag?
After I had had lunch at a village pub,I looked for my bag.I had left it on a chair beside the door and now it wasn't there!As I was looking for it,the landlord came in.
'Did you have a good meal? he asked.
'Yes,thank you,' I answered,'but I can't pay the bill.I haven't got my bag.'
The landlord smiled and immediately went out.In a few minutes he returned with my bag and gave it back to me.
'I'm very sorry,' he said.'My dog had taken in into the garden.He often does this!'
课文在叙述过去一件事情,这一课讲过去完成时,说过去发生的一前一后的两个事情,前面发生的用现在完成时,后面发生的用过去时,但是In a few minutes he returned with my bag and gave it back to me.很明显,他必须要先拿着包回来,才能把包还给我,应该是前半句过去完成时,后半句过去时才对,而这句话用and就把前后发生的两件事儿给连接了,那么如果这样可以的话,我们是不是可以省事点,以后都用这种句式,而不去折腾过去完成时呢
In a few minutes he returned with my bag and gave it back to me.这句为什么就不用过去完成时呢

我明白你的意思,我的理解是这句话强调的是“她回来了并且带着我的钱包”,叙述这样一件事情,主要的意思不是说她回来了,这样就不会太强调动作的前后,所以用过去时就可以.具体情况要具体对待,过去时肯定不能代替过去完成时的,因为有的句子是强调那个动作在过去的那个动作在过去一特定时间就已经完成了!