Question

have sth done,havesth to do的区别

麻烦要详细的解释啊！！
the villagers are going to have the bridge__________(build).应该填什么？
详解！！
I have a lot of problems _to solve___为什么不能用solved??

Answer 1

==A.the villagers are going to have the bridge [ bulit ](build).
村民们准备去使这座桥被修（村民们准备去修这座桥）。

--1.have sth. done = have sth. to be done使某种东西被做.
例:I have my broken watch repaired.=I have my broken watch to be repaired.
我使我的手表被修.(我把我的手表拿去修了)
--2.have sth. to do=let/make sth. to do使某种东西做.
例:I have my broken watch to run again.=I let/make my broken watch to run again.
我使我的手表重新运行起来了。

==B.I have a lot of problems [ to solve ](solve).
我有许多问题(事)需要做。

这里的的have是“有”的意思，跟have sth. done/to do的“使……”不同，而后面的to do是表目的。
又如：
--1.Since I have many things to do,I've got to go.
（因为）我有很多事要做，我得走了。
--2.Please have your child to write the letter.
请务必让你的孩子写这封信。
--3.They have already had their homework done.
他们基本上把作业都搞定了。

Answer 2

built

have sth done -完成时，

the villagers are going to have the bridge built。
这句是将来完成时

have sth to do
现在时-有事要做
I have to go to school now

Answer 3

built 这句话的意思是，村民将要建造一架桥，用的句型是have sth.done
have sth. done 是指使某人／物做某事（指一次性的具体的动作）

have sth. to do 的意思是“有什么事要做”，在这里不符合句意

I have a lot of problems _to solve,这一个并不是have sth to do 的句型，后面用不定式是表示目的，这句话翻译为：我有一个问题要去解决。这个解决是一个目的，所以用不定式