Unit 5 Meeting your ancestors Period 1 Warming Up，Prereading Reading 课件（人教版选修8）.pptVIP

moonlight.在皎洁的月光下散步是件很惬意的事情。 It is a great pleasure to be speaking at the largest law college in the world. 我很高兴能有机会在这所世界最大的法学院发表演讲。 It is a great pleasure to introduce Mr.Smith. He is the President of our company. 很荣幸向你介绍史密斯先生，他是我们公司的董事长。 it作形式主语的句型有： (1)It＋be＋n./adj.＋v.-ing结构 It is easier to lose friends than to make friends. 交朋友难而失去朋友比较容易。 It is no use crying.哭是没有用处的。 (2) It＋be＋n./adj.＋(for sb) to do sth It is important for modern young people to master at least two foreign languages. 掌握至少两门外语对于当代年轻人来说是很重要的。 Its difficult for me to deal with such a problem. 处理这样的问题对我来说很困难。 (3) It＋be＋n./adj.＋of sb to do sth It was foolish of her to waste money on such clothes. 她真蠢，把钱花在买这种衣服上。 (4) It＋be＋n./adj.＋that... It is our duty that we should help those in trouble. 我们有义务帮助那些有困难的人。 【比较网站】　It＋be＋n./adj. ＋for sb to do sth/It＋be＋n./adj. ＋of sb to do sth It＋be＋n./adj. ＋for sb to do sth sb作不定式的逻辑主语，即表示不定式所指动作的执行者。for 的宾语不可作句子的主语。 It＋be＋n./adj. ＋of sb to do sth 形容词表示不定式逻辑主语的特征，即形容词用来描述sb的性格、品行等。of 的宾语可以作句子的主语。 Its common for leaves to fall from the trees in the fall. 秋天树叶从树上落下是件常事。 It was brave of her to speak out in public. 她能当众大声讲话，真勇敢。 【温馨提示】 下列形容词：kind，good，nice，clever，rong，right，foolish，wise，unwise，stupid，rude，careless，cruel，brave，naughty，polite，selfish等词作表语时，常用于It＋be＋n./adj.＋of sb to do sth句型。 It was foolish of you to leave school. ＝You were foolish to leave school. 你中途退学，真是傻瓜。 【完成句子】 ①________ ________ ________ ________ ________ ________ ________ ________a bit of good. 对于一个人来说做点好事并不难。 ②________ ________ ________ ________ ________over spilt milk. 覆水难收。 ③________ ________ ________ ________ ________ ________the food. 浪费这些食物真可惜。 ④________ ________ ________ ________he has known everything. 很可能他什么都已经知道了。 答案　①It is not hard for one to do　②It is no use crying ③It seems a pity to waste　④It is probable that 【句型转换】 ⑤It seemed selfish of him not to share his dictionary with others. ＝________ ________ ________ ________ ________