Unit1LearningAboutLanguage语法课件-高中英语人教版选择性必修第三册.pptxVIP

Unit 1 Art Learning About Language Discover useful structures; 1 2 3 4 ;;动词不定式（短语）作表语;（1）表示目的 The next step is to put the theory into practice. 下一步是要将理论付诸实践。 （2）表示事态发展的结果、预期的结果、不幸的命运或预言 You must speak out, if we are to remain friends. 如果我们还想继续做朋友的话，你就必须把话都说出来。 We believe man is to live a better life in the future. 我们相信人类在将来会生活得更好。 ;（3）当主语是以aim, suggestion, duty, hope, idea, intention等为中心词的名词词组，或者是以what引导的名词性从句，用动词不定式作表语说明主语的内容 Our plan is to make better use of these materials. 我们的计划是更好地利用这些材料。 （4）用于被动语态，相当于can/could, should, ought to, must具有情态意义 These books of great value are not to be sold. 这些书很有价值，不应该卖掉。 （5）表示“同意、安排、命令、决定、劝告、意愿、禁止”等 I am to set out for China next week. 下周我要动身到中国去。（安排） You are to have a face-to-face talk with them. 你应该和他们当面谈一谈。（劝告） Children are not to smoke. 儿童不准吸烟。（禁止）; 主语 + am/is/are/was/were + 不定式 The purpose of education is to develop a fine personality in children. 教育的目的是培养儿童良好的性格。 My idea is to climb the mountain from the north. 我的想法是从北面爬这座山。 Something is still to find out. 有些东西还有待查明。;省略to的情况：;与V-ing（短语）作表语的区别;Match the sentence halves. (P5);Fill in the blanks.;Complete the sentences.