Mary used to watch Tv, but now she is ued to listening to music.

used 身前是空气，to 后原形表过去

used 身前若有be ，to 后得加ing

过去常常used to do

习惯于（现在）be/get used to doing

Her son used to drink, but now he is used to drinking milk.

would like

want

need

后跟to be 形式

I would like to try different method.

She want to be a writer.

Joe need to speak in front of people.

We love reading.

He hates reading.

I am good at writing.

She is weak in writing.