be used to do
造句:Eventually, this environment can be used to do more than just observe a system.
译文:最终,可以使用该环境来做的工作不仅只是观察某个系统。
be used to doing
造句:He is an experienced driver and he is used to driving in all kinds of weather.
译文:他是一位有经验的驾驶员,他习惯于在各种各样的天气情况下开车。
used to do
造句:Go with it, talk about what you used to do and what things used to be like.
翻译:行动起来吧,找机会和他(她)谈谈你过去在干些什么? 那时情况是怎样的?