九年級下冊Unit 4 Natural disasters導學案

九年級下冊unit 4 natural disasters導學案

ⅰ.學習目標
1.  unit 4重點單詞、短語
2.  it作形式主語的用法
ⅱ.重點、難點分析
1、 what other natural disasters can you think of? 你還能想到其他的自然災害？
think of  想起，想到，認為
辨析：think of, think about與think over
（1）think of想出，記起，考慮  
eg: who thought of the idea？  誰想出的這個主意？  
（2）think about思考，考慮
     eg: i'll think about your suggestion，and give you an answer tomorrow.
我要考慮一下你的建議，明天給你答復。  
（3）think over 意為“仔細考慮”。
     eg: think over，and you'll find a way.  仔細考慮一下，你就會有辦法的。
【拓展】what do you think of…?  是固定句型，意為“你覺得……怎么樣？”，相當于“how do you like…?”。
eg: what do you think of the film?  =  how do you like the film?
2、because he is interested in the north and south poles.  因為他對南北極感興趣。
be interested in 對…..感興趣， 后面跟名詞或者動名詞作賓語。
the boy is interested in science.
they are interested in playing computer games.
辨析： interested與interesting
interesting表示事物本身具有使人產生興趣之處；如the cat is interesting.
而interested表示某人對某事感興趣；如i am interested in the book bought yesterday.
3、what would happen if our city was badly flooded?  如果我們的城市嚴重淹水，將會發生什么事情？
happen是不及物動詞。happen的用法主要有以下三種：
（1）"sth.+happen+地點/時間"，意為"某地/某時發生了某事"。
eg：an accident happened in that street.  那條街發生了一起事故。
 what's happening outside?    外面發生什么事了？
（2）"sth.+happen to+sb."意為"某人出了某事(常指不好的事發生在某人身上)"。
eg: a car accident happened to him yesterday.  昨天他發生了交通事故。 
what happened to you?  (=what was wrong / the matter with you?)  你怎么啦？
 （3）"sb.+happen+to do sth."意為"某人碰巧做某事"；或者”it happens + that從句”，意為“碰巧…..”
eg:  i happened to meet her in the street.  我碰巧在街上遇見她。 
it happened that i was out when he called.  他來訪時我碰巧不在。
辨析：happen與take place
1). take place 表示“發生、舉行、舉辦”，一般指非偶然性事件的“發生”，即這種事件的發生一定有某種原因或事先的安排。
eg：great changes have taken place in our hometown during the past ten years.
the olympic games of will take place in beijing.
2). happen作“發生、碰巧”解，一般用于偶然或突發性事件。
eg：what happened to you?
i happened to see him on my way home. = it happened that i saw him on my way home.