have sth done

have +object+past participle 

have 跟宾语（名词或代词）跟done,

可以用在各种时态。

have 是使役动词，强调使或让别人为我们服务/做某事。让人...

I washed my car.  I washed it myself.

I had my car washed. 我让人洗了车。

Someone else washed it for me.

I am going to have my suit cleaned. 

Someone else will do it for me .我将把我的西服送出去洗一洗。

He had his hair cut.他昨天理了发

I will have to have my watch repaired.

我将不得不去修表。

Did you have your watch repaired?你修表了么？

No, I didn't have my watch repaired.

Don't you 跟动词原形，你不做...么？

is a mess 脏乱

I barely started 我刚刚开始。

re-do 重做

let(=allow, permit) 这个使是允许，同意的意味

make(=force, compel, persuade)使，但这个使是带有强迫和劝说的意味

三个使役动词的用法

I cannot make my son do his homework.

= compel him to ...

I cannot oblige Sally to eat chicken.

=I cannot make Sally eat chicken.

We cannot persuade Don to accept our offer.

=We cannot make Don accept our offer.

We couldn't force the children to go into the water.

=cannot make

my parents rarely let me do what I really wanted to.

Before I left, my friends let me have some money their own bees had produced.

No,