only if
经典句式 1 [语境感悟] (1)(教材P7)Only if you put the sun there did the movements of the other planets in the sky make sense. 只有当你把太阳放在中心位置上,天空中其他行星的运动才能说得清楚。 (2)Only when Lily walked into the office did she realize that she had left the contract at home.(2015·天津) 直到莉莉走进办公室时,她才意识到她把合同忘在家里了。 (3)If only he could come tomorrow! 他要是明天能来就好了! [归纳拓展] (1)only if只有,只要;only引导副词、介词短语或状语从句置于句首时,主句要用部分倒装。 (2)if only 要是……,但愿……,后使用虚拟语气。用一般过去时表示与现在事实相反的情况;用过去完成时表示与过去事实相反的情况;用would/could do表示与将来事实相反的情况。 (1)用倒装结构翻译下列句子 ①只有用这种办法你才能改善你的发音。
②只有到那时我才意识到我错了。
(2)If only you
! 要是你听从了他的建议就好了! 答案 Only in this way can you improve your pronunciation. Only then did I realize that I was wrong. had followed his advice [即时跟踪] 现在分词短语作伴随状语 2 [语境感悟] (1)(教材P7)So between 1510 and 1514 he worked on it,gradually improving his theory until he felt it was complete.
于是,他在1510年至1514年期间从事这项研究,逐步修改他的理论,直到他感到完善时为止。 (2)Do you wake up every morning feeling energetic and ready to start a new day?
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