Question

4．许多年长者习惯早睡早起，这对身体大有裨益．（used）Many old people areused togoing to bed early and getting upearly，which is helpful/beneficial to their health/does good to/benefits．．

Answer 1

分析 许多年长者习惯早睡早起，这对身体大有裨益．

解答 答案：Many old people are used to going to bed early and getting up early，which is helpful/beneficial to their health/does good to/benefits．
句子里 are used to 表示"习惯于"，用动名词做宾语；which引导非限制是定语从句，代指主句；helpful/beneficial to their health/does good to/benefits．都表示"对…有好处"．

点评 考查used的用法．
1．used to+do："过去常常"表示过去习惯性的动作或状态，但如今已不存在．
Mother used not to be so forgetful．
Scarf used to take a walk．（过去常常散步）
2．be used to+doing：对…已感到习惯，或"习惯于"，to是介词，后需加名词或动名词．
He is used to a vegetarian diet．
Scarf is used to taking a walk．（现在习惯于散步）