be familiar to与used to有什么区别.讲详细点,要有例句.

e familiar to
为…所熟悉
主语是物.比如The city isn't familiar to me.我对这个城市不熟悉
used to表示过去的习惯性动作,过去如此,现在不再这样了.常译作“过去常常”.如：
He used to play basketball when he was young.他年轻的时候常常打篮球.
There used to be an apple tree here.过去这儿曾经有棵苹果树.
我估计你想问的是 be used to do吧 他有几种用法
1）表示“被用来做某事”.如：
Wood is often used to make desks and chairs.木头常常被用来制作桌椅.
2）be used to doing /n.表示“习惯于”某一客观事实或状态,不强调动作,to是介词,后面接名词或动名词.如：
He is used to hard work.他习惯于艰苦的工作.
She is not used to eating Chinese food.她不习惯吃中餐.

be familiar to : well known to sb, often seen or heard 为......所熟悉
English is familiar to me. 英语为我所熟悉。
used to :过去常常
I used to go swimming on Saturdays but now I don't. 我过去常在周六去游泳，现在不去了。