人教课标高二第8册 Unit2Cloning 课堂辅导
Grammar 1. This happens in plants when gardeners take cuttings from growing plants to make new ones, and when small parts of a plant are taken and grown in a laboratory. 当园艺师从生长着的植物上剪下枝条来培植新植物时,当你从植物上取下一小部分放在实验室里生长时,就会产生这种现象。(P.11)
「考点」 “when gardeners take cuttings from growing plants to make new ones, and when small parts of a plant are taken and grown in a laboratory.”是两个时间状语从句。when引导的时间状语从句中从句的动作可以与主句的动作同时发生,也可以先于主句的动作。
「考例」 Don‘t be afraid of asking for help _____ it is needed. (03,全国)
A. unless B. since C. although D. when「解析」 答案D.题意为:当需要帮助时,不要害怕向人求助。四个选项都是可用于引导状语从句的从属连词,如果只是按照结构形式考虑,是无从下手的,应该从语义来考虑。从语言运用的角度看,此处的具体语境为向对方提出要求;后一句应该表达出“凡有需要时”的意思,选项D为最佳答案。
2. The fact that she seemed to develop normally was very encouraging. (P.12) 多莉看来是在正常地成长着,这很令人鼓舞。
「考点」 “that she seemed to develop normally”是同位语从句。
「归纳」 同位语从句可由when/ where/ how/ why/that/ whether等词引导。同位语从句的先行词多半是idea/ fact/ news/ hope/ belief/ thought/ doubt/ question等。同位语从句一般放在抽象名词之后,用以说明抽象名词的具体内容,有时为了保持句子的平衡,同位语从句还可以放在动词的后面。如:Soon word came that we won. 不久就传来了我们赢了的消息。
「考例」 A warm thought suddenly came to me _____ I might use the pocket money to buy some flowers for my mother‘s birthday. (06,安徽)
A. if B. when C. that D. which
「解析」 答案C.题意为:我脑海中突然出现一个温馨的念头,用我的零花钱给妈妈买些鲜花作为她的生日礼物。本题a warm thought 与其同位语从句被 suddenly came to me 隔开,增加了试题难度。
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