高中英语unit3Grammar学案新人教版选修8VIP专享

Unit 3 Inventors and inventions Grammar1. The first thing I tried to do was to see if there were products that might help me, but there only seemed to be powders designed to kill snakes. 首先我查看是否有产品能帮助我，但看来只有一种毒杀蛇的药粉。（P.20）【点拨 1】本句中 there seemed to be 是 there be 句型的特殊形式，表示“似乎有”。注意其时态的变化，如：seem to do / seem to be doing / seem to have done 等。 【点拨 2】 designed 过去分词作后置定语，修饰前面的名词 powders，表被动。【考例】“Things ______ never come again!” I couldn’t help talking to myself.（2007，湖南）A. lost B. losing C. to lose D. have lost 【解析】答案 A。 句意为：“失去的事物不会再回来！”我忍不住自言自语。本题考查非谓语动词。因为 things 和 lose 之间是被动关系，须用过去分词作定语。单个的过去分词作定语时一般位于名词之前，但有时为了强调，也可放在名词之后作后置定语。2. For the second attempt I froze the bowl and ice-cubes again but placed them over the snakes habitat in the evening as the temperature was staring to cool. 第二次试验时，我把碗和冰块再次冻好，但在傍晚气温开始下降的时候把它们放在蛇穴的上方。（P.20）【点拨】 本句中 but 连接两个并列的动作 froze 和 placed； as 引导时间状语从句，表示“当……时候”。注意 as 在英语中起的作用很多，它可以引导时间状语从句、让步状语从句、原因状语从句、定语从句等。【考例】______, his idea was accepted by all the people at the meeting.（2007，重庆）A. Strange as might it sound B. As it might sound strangeC. As strange it might sound D. Strange as it might sound 【解析】 答案 D。句意为：尽管他的想法听起来有些奇怪，但与会的所有人都接受了。本题考查倒装语序。 as 引导让步状语从句时，作表语的形容词要前置。3. Pressed by my friends and relations, I decided to send my invention to the patent office to get recognition for my successful idea. 在亲戚朋友的督促下，我决定把我的发明送到专利...