used to 與be used to 的區別：
1、used to 後跟強調動作的動詞時表示“過去常常”，後面跟表示狀態的詞時，表示“曾經，壹度”，used to 的後面跟動詞原形。
2、be used to表示“習慣於做某事”人作主語，後面用ving形式--be used to doing ；如果是物來做主語的話，be used to表示“被用來做某事”，後面跟動詞的原形---be used to do。
used to的用法
1、I feel more compassion and less anger than I used to.?
我覺得自己比過去多了些同情，少了些怒氣。
2、A kid I used to be friends with turned against me after being told that I'd been insulting him
曾和我很要好的壹個小孩聽人說我壹直在辱罵他以後就和我翻臉了。
3、The machines start to wear down, they don't make as many nuts and bolts as they used to
機器開始出現磨損，螺母和螺釘的產量不如從前了。
4、I used to pour time and energy into projects that were doomed from the start.?
我過去常常將大量時間和精力投入到從開始就註定要失敗的計劃中。
5、This piece of cloth can be used to make a pair of pillow cases.?
這塊布可以做壹對枕套。
be used to的用法
1、This piece of cloth can be used to make a pair of pillow cases.?
這塊布可以做壹對枕套。
2、If necessary X-rays and blood tests will also be used to aid diagnosis?
如有必要，還要進行X光檢查和驗血以幫助診斷。
3、She probably has a good mind, which should be used to the full?
她可能很有頭腦，應該充分運用。
4、Yoga can be used to strengthen the immune system.?
瑜伽能增強人體免疫系統。
5、Antibiotics should be used to clear up the infection?
應該用抗生素消除感染。