Question

3．-How has he changed！
---Yes．Heused to like staying up，but now he is used to going to bed and getting up early．（过去喜欢熬夜，但是现在习惯于早睡早起）．（used）

Answer 1

分析 used to like staying up，but now he is used to going to bed and getting up early．

解答 答案：used to like staying up，but now he is used to going to bed and getting up early．
表示过去常常结合used用used to do sth，喜欢做某事like doing sth，stay up熬夜，故used to like staying up，表示习惯于做某事用be used to doing sth，主语he，故but now he is used to，上床go to bed，起床get up、early早，故答案是used to like staying up，but now he is used to going to bed and getting up early．

点评 be/get used to doing sth．表示习惯于做某事或习惯于某事，to是介词，后面要跟名词、代词或动名词．而used to do sth．则表示过去常常，to后跟原形动词．
如：Now he is used to getting up early．
现在他已经习惯早起了．
He used to get up early．
过去他经常早起．（意味着如今他不再早起了．）
You'll soon get/be used to hard work．
你会很快习惯于艰苦的工作的．