题目内容：

used to be和was often区别
I used to be hungry at noon
I was often hungry at noon

优质解答

used to be 是过去常常发生的事情,也许是从过去的某一个时间点开始就不再发生了...
was often 也是经常发生,但是时间可以推算到说话之前的零点一秒,也就是说,这个习惯是可以继续下去的.