虚拟语气中，as if/as though, 或even if/even though的用法有哪些？

Question

如题所述

Answer 1

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用在asif/as though, 或evenif/even though引导的从句中: 这时，如果从句中表示的动作发生在过去，则谓语动词用had＋过去分词形式；如果指的时现在的状况，则用过去式 (be用were)；指将来则用would(should,could)+动词原形。这里只看从句动作发生的时间，与主句的时态没有关系。
Forexample:
Some metals look at first sight as though they weregold.
He looked as if he were an artist.
He speaks English so fluently as if he had studiedEnglish in the U.S.
He always sounds as if he would help you.
When a pencil is partly in a glass of water, itlooks as if it were broken.
Even if he were here, he could not solve theproblem.
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