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失败并不意味着你一无所成。
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There is no happiness except in the realization that we have accomplished something.
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如果意识不到我们有所成就就没有幸福可言。
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After you have done what you need to do, you can do what you want.
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在完成必须做的事情之后,你才能去做希望做的事情。
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当since表示“自从……以来”时,主句往往使用现在完成时。
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He has become energetic since two years ago.
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自从两年前以来,他变得朝气蓬勃。
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Great changes have taken place in my life since I changed my negative attitude.
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自从我改变了消极的态度以来,我的生活发生了巨大的变化。
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现在完成时常用于下列句型:It(或This, That)is the +序数词(或last)+ time (that) +现在完成时,基本意义为“某人做某事是第……次了”。
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I promise it is the last time I have made such a stupid mistake.
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我保证,这是我最后一次犯这样的愚蠢错误。
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This is the tenth time that I have tried, but I never lose heart.
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这是我第十次尝试,但我从未丧失信心。
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在该句型中,如果主句是一般将来时,从句仍使用现在完成时。
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This will be the first time you have spoken in public, but there is nothing to worry about.
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这将是你第一次在公共场合讲话,但没什么可担心的。
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11.4 现在完成进行时
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现在完成进行时的基本构成是:has (have) been +动词的现在分词形式。
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现在完成进行时表示动作从过去某个时候开始,一直持续到当前。
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Man has been trying to control nature.
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人类一直在致力于控制自然。
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If you haven’t discovered your dream, probably you’ve been missing too much.
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