今天重庆新航道的小编要给大家分享的是would do和used to do的用法与差别，这两个短语词组在考试语法以及完形填空中经常会用到，小编小面就带大家来看看怎么用好这两个短语，大家要记笔记哦。
would do和used to do虽然都可以表过去习惯，而且有的时候可以相互替换，但它们却存在以下几点区别：
（一）
would do一般用来表示过去反复进行的动作，而used to do则既可以表过去反复发生的动作，也可以表示状态。如：
1）would do
Every Saturday I would go on a long bike ride.
My dad would read me amazing stories every night at bedtime.
2）used to do
We used to live in New York when I was a kid.
She used to smoke， but she gave up a few years ago.
（二）
would do一般没有否定表达，而used to do则肯定和否定都可以。如：
There didn't use to be a supermarket there. When did it open?
Did you use to have a garden?
（三）
would do所在的句子一般会先给出过去时间背景，然后才能用would do，但used to do则无需如此。如：
1）would do
When I was a child, I would watch cartoons with my dad in the mornings.
When I was a student, I would read books in the library every Friday.
2）used to do
I used to watch cartoons with my dad in the mornings, when I was a child.
I used to read books in the library every Friday, when I was a student.
（四）
would do中的do一般不能是像be、understand、feel、love这样的静态动词。如：
错误：When I was a kid, I would feel happier.
正确：When I was a kid, I used to feel happier.
再比如：
错误：I would have long hair.
正确：I used to have long hair.
以上就是小编今天给大家分享的相关内容，如果大家想要了解更多留学资讯、留学规划、雅思课程、托福课程、新概念英语课程、剑桥青少课程或者有任何疑问，欢迎联系新航道重庆学校。
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