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d him to arrive yesterday. 我們原以為他昨天能到。 3. To keep fit … keep fit = keep healthy 保持健康 keep (sb. / sth.) + adj. 保持 / 護(hù)某人 /物 …… keep our classroom clean 保持教室清潔 It’s important for the college freshman to keep his nose clean. 4. … required more physical effort. require v. 要求;需要;命令 We’ll let you know if we require further help. 我們?nèi)绻枰鄮椭透嬖V你。 The headmaster required her to keep silent. 校長命令她保持安靜。 require sb. to do sth. 要求某人做 …… sb. be required to do sth. 某人被要求做 …… Our teachers require us to study hard. We are required to study hard by our teachers. 5. Do you get the same amount of exercise today as they did in the past? the same as … 和 …… 一樣 — She looks the same as Lucy. — They are the twin sisters. 她看起來和露西長的一樣。他們是雙胞胎姐妹。 反義短語: be different from 6. You should only have it once in a while. once in a while 偶爾,有時(shí) We go out for a walk once in a while. 我們偶爾出去散散步。 近義短語: at times now and again now and then from time to time 7. … will harm your health. harm v. 傷害;損害 Smoking harms our health. 吸煙有害健康。 I have never harmed anyone. 我從沒傷害過任何人。 8. … do not need as much sleep as babies. as … as 結(jié)構(gòu)的意思為“不 …… 一樣”,中間加形容詞或副詞原級。 The tree is as tall as the building (is). 這棵樹和那棟樓一樣高。 You’ve made as many mistakes as I have. 你犯的錯(cuò)誤和我犯的一樣多。