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．（過(guò)去喜歡熬夜，但是現(xiàn)在習(xí)慣于早睡早起）．（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．
表示過(guò)去常常結(jié)合used用used to do sth，喜歡做某事like doing sth，stay up熬夜，故used to like staying up，表示習(xí)慣于做某事用be used to doing sth，主語(yǔ)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．

點(diǎn)評(píng) be/get used to doing sth．表示習(xí)慣于做某事或習(xí)慣于某事，to是介詞，后面要跟名詞、代詞或動(dòng)名詞．而used to do sth．則表示過(guò)去常常，to后跟原形動(dòng)詞．
如：Now he is used to getting up early．
現(xiàn)在他已經(jīng)習(xí)慣早起了．
He used to get up early．
過(guò)去他經(jīng)常早起．（意味著如今他不再早起了．）
You'll soon get/be used to hard work．
你會(huì)很快習(xí)慣于艱苦的工作的．