it. 用法公开课ppt课件.ppt

Grammar;How much do you know about “it”?;The Use of “it”; 1. 做人称代词，代替前文提到过的事物。; 4. 做非人称代词，指代时间、天气、距离、环境、季节、日期、价值等。; It was a sunny day. Peter decided to go for a walk to the park even though it was 2 miles away. He was just about to leave the house when someone knocked at the door. “Who is it?”,he thought. When he opened the door, he found nobody but a note on the ground. He picked it up and read. It is surprising that the note should have been given to his neighbour. ;2、It is no good smoking.; 此处adj. 通常为描述人的形容词：kind; rude; silly， careful; careless; foolish; stupid; clever; wise... Its kind of you to help me with the problem.　;e.g. It is fun to go out for a walk. ; 常见的adj.有:possible;clear;obvious;true,etc It is very clear that he grows like a tree. ; 作形式宾语，代替由不定式、动名词或从句表示的真正宾语。;;Giving up smoking is difficult. It is 2. Some young people think they look attractive when they smoke. It seems 3. Most people believe smoking causes cancer. It is believed 4.Don’t try to quit on a stressful day. It is no use ;5. China produces one third of the world’s cigarettes. It is astonishing 6. You are not allowed to advertise cigarettes in this country. It is illegal 7. My father has quit smoking at last. It is wonderful 8. The night was dark and stormy when the old man started his journey. It was a 9.You could suffer from bad health if you keep smoking. It is likely 10.You have to take pills to control your blood pressure. It is necessary; 2、用it句型把A句转换为B句，意思不变。 1. A.To keep order in an important football match is a hard job for the police. B．__ __ ___ _____ ____ for the police to keep order in an important football match. 2．A.To recite the passages in New Concept English is an effective way in English study. B. __ __ ___ ________ _____ in English study to recite the passages in New Concept English. ;5．A.Who will take us to visit the nature park h