过去常常做某事英语是: used to do sth， 音标：英 [juːzd tu duː]  美 [juːzd tu duː]。而习惯于做某事得英语是：be used to doing sth。两者易搞混。 

used to do sth

常用例句:

I used to live in London.
我过去一直住在伦敦。

Life here is much easier than it used to be.
如今在此地生活比起从前可舒服多了。

I used to go fishing by the river.
我过去常常去河边钓鱼。

I'm used to having a cup of tea in the morning.
我习惯每天早上和杯咖啡。

I used to do that when you were a little girl, remember?  
在你还是小女孩的时候我曾经那么做过，记得吗？

When I used to do that when I was a kid, my mom would spank me.
我还是个孩子的时候常常干那种事，每次妈妈总是打我的屁股。

 

be used to doing sth

常用例句:

The fact that this boss came in from the outside is significant, because it means he may be used to doing things in a different way.
你
的老板来自外部，这个事实非常重要，因为这意味着他或许习惯了不同的工作方式。

It could be used to doing quality assessment and fault diagnosis for integrated transmission system of endless-track vehicles repaired by maintenance and guarantee institution.
该试验台可用于维修保障机构对修复后的履带车辆的综合传动系统进行维修质量评估和故障诊断。

The passive node can be used to offload the effect of doing regular backups.
被动节点可以用于减轻定期备份所造成的影响。

It can be used to analyze of ECG data of people doing exercise. In ECG reports, we added ST Segment morphological classification, it may be helpful for doctors to analyze reasons of ST Segment variation.
在心电报告中，根据ST段分类结果，增加了ST段形态分类结果，有助于医生分析ST段变化的原因。