Question

4．許多年長(zhǎng)者習(xí)慣早睡早起，這對(duì)身體大有裨益．（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 許多年長(zhǎng)者習(xí)慣早睡早起，這對(duì)身體大有裨益．

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"習(xí)慣于"，用動(dòng)名詞做賓語(yǔ)；which引導(dǎo)非限制是定語(yǔ)從句，代指主句；helpful/beneficial to their health/does good to/benefits．都表示"對(duì)…有好處"．

點(diǎn)評(píng) 考查used的用法．
1．used to+do："過(guò)去常常"表示過(guò)去習(xí)慣性的動(dòng)作或狀態(tài)，但如今已不存在．
Mother used not to be so forgetful．
Scarf used to take a walk．（過(guò)去常常散步）
2．be used to+doing：對(duì)…已感到習(xí)慣，或"習(xí)慣于"，to是介詞，后需加名詞或動(dòng)名詞．
He is used to a vegetarian diet．
Scarf is used to taking a walk．（現(xiàn)在習(xí)慣于散步）