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She has silken hair．她有柔滑光亮的头发。
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silky也是形容词，表示“像丝一样柔滑光亮的”或“像丝的”：
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This shampoo will make your hair soft and silky．这种洗头水可以使你的头发柔滑光亮。
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A silky material is one that is like silk. silky material指像丝一样的料子。
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△silken是比较文气的词。丝料子用silk（dress）更好一些。
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816 since
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since是介词，也是连词，表示“自从”，后面可以跟：
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（1）名词：She has loved Shakespeare since childhood．她从小就热爱莎士比亚。
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（2）动名词：Charles has worked hard since leaving school．从离开学校以来查尔斯一直很努力。
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（3）when (then): Since when have you been living in this country？你是从什么时候起住在这个国家的？
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（4）介词短语：He had been there since before the war．从战前起他一直住在那儿。
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（5）从句：She has had another baby since I saw her last．从上次我见到她以来，她又生了一个孩子。
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在绝大多数情况下句子谓语都用完成时态（见上例）。
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但在表示有多长时间时可以用一般时态：
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It‘s a long time since breakfast．吃早饭到现在已有很长时间了。
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It‘s a long time since I met you last．上次见到你以来已经很久了。（好久不见了。）
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How long is it since you were in London？你到伦敦有多久了？
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It‘s just a week since we arrived here．我们到达这里才一个礼拜。
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在since引导的从句中在多数情况下谓语都用一般过去时：
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We’ve been friends ever since we met at school．自从我们在学校遇见以来一直是朋友。
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Since I was a child I have lived in England．我从小就住在英格兰。
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有时从句中谓语可用完成时态：
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I haven’t seen you since I have been back．我回来后一直未见到你。
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It’s a considerable time since I have spoken to you on these matters．有相当多时间我没和你谈这些事了。
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You’ve drunk about ten cups of tea since you‘ve been sitting here．从你坐在这儿起你已喝了十杯茶了。
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