would do和used to do有何区别？？请详细点，多造几个句子，谢谢了~

would do和used to do有何区别？？请详细点，多造几个句子，谢谢了~

1、used to 表示过去的状态，would表示过去反复的动作。
When he was abroad,he would read as many books as possible.
在国外时，他总是尽可能地多读些书。
Mr White used to live in China.
怀特先生过去常住中国。
2、would常跟时间状语every day,often,frequently等连用，used to则不必
The old man would go every day to the park to feed the birds.
这个老人每天到公园里去喂鸟。
Every evening,she would sit by the window,deep in thought.
每天晚上她总是坐在窗户旁，想着心事。

would do 可以用在虚拟语气中，used to do是过去常常做某事

would do 表过去习惯性的动作，翻译成：（过去）总是会。。。如： The old man would sit in front of the house, waiting for his son to come to visit him. 那位老人（过去）总是坐在屋前，等儿子来看他。 used to do 强调过去曾经做过，而现在不做了，如： There used to be a hospital here, but now there is a beautiful garden instead. 此地过去曾有一家医院，但现在却是被一座漂亮的花园所代替。

would do是will do 的过去式，也可以是一般过去将来时。 would rather do sth宁愿做某事 What would you do你将要做的；你将怎做；你能做什么；你接下来会 What other country would do that? 还有哪个国家会这么做？ used to do是指过去常常，过去曾经；过去常常做某事 used to do something过去经常做某事 used to do sty曩昔常做某事 used to do sth过去常做某事；过去常常做某事 Like i used to do。 像我做的那样；就像我往日所作 Old Man Olsen was making a corsage of gardenias, just as he used to do. 奥尔森老头还像当年那样正在扎着供胸前佩戴的一束栀子花。

1、used to 表示过去的状态，would表示过去反复的动作。 When he was abroad,he would read as many books as possible. 在国外时，他总是尽可能地多读些书。 Mr White used to live in China. 怀特先生过去常住中国