unit 18 new zealand 第三课时教案
i. teaching aims:
talk about new zealand.
learn grammar: the use of “it” as subject.
similar dialogue presentation with new words and expressions used within
ii. teaching aids: none
step i revision
step ii word study
finish the exercises in student book, page 40.
step iii practice
let ss finish the exercises “vocabulary, 2/3” in page 79, workbook
step iv grammar
1. it也可以代替不定式或从句在句中作形式主语，即：
it be +adj. +（n.）+that +clause或it be adj. +to do sth.，那么that引导的从句和不定式是句子中的真正主语，这个用法是为了避免长句作主语导致句子的不对称，如：
it is difficult to finish this job on time（= to finish the job on time is difficult）.要按时完成这项工作是很困难的。
it is strange that she doesn’t want to travel. 她竟然不想旅游，这个让人感觉很奇怪。
it is a good thing that he helps me with english study on sunday. 星期天他帮助我学习英语是一件好事。
2. it作主
Traffic Jam