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因是它們能供應(yīng)我們新鮮的空氣。 Mr. Chang is the kindest teacher that I have ever had. 張老師是我曾經(jīng)遇到最仁慈的教師。 五、 It is universally acknowledged that + 句子 ~~ (全世界都知道 ...) 例句: It is universally acknowledged that trees are indispensable to us. 全世界都知道樹木對我們是不可或缺的。 十二、 By +Ving, ~~ can ~~ (借著 ..., ..能夠 ..) 例句: By taking exercise, we can always stay healthy. 借著做運(yùn)動(dòng),我們能夠始終保持健康。 二十、 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。 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。 二十一、 For the past + 時(shí)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(zhǔn)備考試。 十四、 On no account can we