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二十五、Spare no effort to + V (不遺余力的) 例句:We should spare no effort to beautify our environment. 我們應(yīng)該不遺余力的美化我們的環(huán)境。) 例句:It pays to help others. 幫助別人是值得的?! ±洌篠ince he went to senior high school, he has worked very hard. 自從他上高中,他一直很用功。 二十一、For the past + 時間,S + 現(xiàn)在完成式...(過去...年來,...一直...) 例句:For the past two years, I have been busy preparing for the examination. 過去兩年來,我一直忙著準備考試?! 《?、That is the reason why ~~~ (那就是...的原因) 例句:Summer is sultry. That is the reason why I don’t like it. 夏天很燠熱?! ∈?、be + forced/pelled/obliged + to + V (不得不...) 例句:Since the examination is around the corner, I am pelled to give up doing sports. 既然考試迫在眉睫,我不得不放棄做運動。 十六、Those who ~~~ (...的人...) 例句:Those who violate traffic regulations should be punished. 違反交通規(guī)定的人應(yīng)該受處罰。