2017高考英语 Unit3《Under the sea》知识与要点课件 新人教版选修7.ppt

【链接训练】 ①Most parents are not ________ the danger of their babies eating jelly，which causes most unfortunate incidents to happen. A．well aware to B．very aware of C．aware that D．well aware of 【解析】　考查形容词用法。空白处后面不是句子，故排除C项；aware后面接of，故排除A项；另外表示“清醒地，充分地认识到”时，表语形容词aware的修饰语应使用well，不用very。故选D。 【答案】　D ②It was several minutes before I was ________ of what was happening. A．aware B．awareness C．awaring D．realized 【解析】　aware为表语形容词，不可直接作谓语；awareness意为“意识，觉悟”；realize为及物动词，意为“认识到，意识到”，后面直接接宾语，所以答案为A项。 【答案】　A 复习被动语态(Ⅱ) 动词-ing形式的被动结构 动词-ing形式包括动名词和现在分词两种形式，因而其被动结构也有这两种形式。 一、动名词的被动语态 1．当动名词逻辑上的主语是动名词所表示的动作的对象时，动名词一般要用它的被动式。 He cant stand being laughed at. 他忍受不了被别人嘲笑。 2．动名词的主动形式表被动含义 (1)在want，need，require，deserve等动词后，常用动名词的主动形式表达被动含义。 The radio needs repairing. ＝The radio needs to be repaired. 这台收音机需要修理了。 (2)be worth后常跟动名词的主动形式表达被动含义。 The book is worth reading again. ＝The book is worthy of being read again. 这本书值得再读一遍。 二、现在分词的被动语态 其构成为being/having been＋过去分词。 如果现在分词所表示的动作与其逻辑主语之间是被动关系，则应用现在分词的被动形式。 The building being built is our library. 正在被建的这座楼是我们的图书馆。 Having been given the good chance，how could I give it up？既然给了这么好的机会，我又怎么能放弃？ 注意：当分词所表示的动作与谓语表示的动作同时发生或正在进行，则用being＋过去分词；当分词所表示的动作在谓语表示的动作之前发生则用having been＋过去分词。 【链接训练】 ①________，we were taken to see the library. A．We had been shown the classrooms B．Being shown the classrooms C．Having been shown the classrooms D．Having shown the classrooms 【解析】　考查现在分词完成时的被动语态。句意为：我们先被带领着参观了教室，又被带领着去参观图书馆。“看教室”发生在“看图书馆”之前，所以用完成时，且根据句意要用被动。 【答案】　C ②________ in a heavy traffic jam in a taxi while you are hurrying to the airport is quite an unpleasant experience. A．Having caught B．Being caught C．Caught D．Having been caught 【解析】　考查非谓语动词。句意为：当你急着去机场时遇到堵车是多么不愉快的经历啊。being caught in引导的动名词短语作主语，并且表示被动。句子主语为“________in a heavy traffic jam”，其逻辑主语you为动作的承受者，故应用动名词的被动结构，而过去分词不能作主语，所以C项错误。D项时态不正确。 【答案】　B ③Wild animals ________ and killed at such a speed that they will disappear from the earth in the near future. A．hunt B．are hunting C．are bein