Unit5Thepowerofnature第五学时课件（人教版选修6）.ppt

Unit 5　The power of nature　　　　　　　　　　 　　　　　 第五学时　Writing 1．Having collected and evaluated the information，I help other scientists to predict where lava from the volcano will flow and how fast it will flow. (p.34) 句型分析：“having done”是现在分词的完成式在句中作状语，强调非谓语动词所表示的动作在主句谓语动作之前发生。此时，两个动作的逻辑主语一致。 ►即学即练 翻译下列句子。 (1)昨晚熬夜看了足球比赛，今天他极度疲倦。 ________________________________________________________________________ (2)我以前从没见过火山爆发，所以那一刻我非常激动。 ________________________________________________________________________ Having stayed up for the football match last night，he is extremely tired now. Never having seen a volcano erupting before，I was very excited at that moment 2．I was about to go back to sleep when suddenly my bedroom became as bright as day.(p.34) 句型分析：be about to do sth. when...表示“正准备做……时，此时……”，when 在这个句型中是“正在那时；此时”的意思，主句常常是be about to do sth. 或 was/were doing 作谓语。如：I was going out when my teacher came in. ►即学即练 翻译下列句子。 (1)我正准备打电话给我妈妈时，我的手机响了。 ________________________________________________________________________ (2)昨晚我正要睡觉，突然听到有人敲门。 ________________________________________________________________________ I was about to call my mother when my mobile phone rang just now. Yesterday evening I was about to sleep when suddenly I heard there was a knock on the door. 3．This being my first experience，I stayed at the top and watched them.(p.35) 句型分析：“名词/代词＋doing”结构在句中作原因状语，是一个独立主格结构。非谓语动词作状语时，其逻辑主语须与主句的主语保持一致。但有的分词短语有它自己的独立主语，这种结构就叫独立主格结构，只在句中作状语。常见形式有：there being 结构，名词/代词＋现在分词/过去分词。 如：There being no buses，we had to walk home. ►即学即练 翻译下列句子。 (1)天气允许的话，我们明天就去郊游。 ________________________________________________________________________ (2)因为是周日，所以我们昨天不上课。 ________________________________________________________________________ Weather permitting，we will go outing tomorrow. It being Sunday, we didnt have classes yesterday. 用上述句型翻译下列小片段。 我正要琢磨去哪里过夜时，我的车在一座偏僻而又贫瘠的村庄附近抛锚了。太阳快要落山了，我有点着急。听了妈妈的话，就不会这样了。我真后悔啊！ ________________________________________________________________________ I was wonder