卜芽Unit7Howlonghaveyoubeencollectingshells4.doc

Unit7 How long have you been collecting shells?第四课时（Self Check）【学习目标】1) Present perfect progressive2) Simple past tense3) Present progressive tense 【学习重难点】区分过去进行时，一般过去时和现在进行时【课前预习】单词及短语：extra, coin, topic, been, writer, be interested in, a talent show, Win the first prize, finish doing sth. with a very colorful history. European influence, more than= over, were welcomed by, Enjoy doing sth. far from, near to句型： What does Bob collect?He collects kites.How long has he been collecting kites?Hes been collecting kites since he was ten years old. 【展示交流】“thethe”结构：在此结构中，the后连接形容词或副词的比较级，即：the+（形容词，副词）比较级The+（形容词，副词）比较级,该结构意为“越就越”。两个比较级前用定冠词the分别引导一个分句，前一分句常做状语，表示条件，后一分句则表示结果，两个句子属因果关系。如：The sooner, the better.【合作探究】现在完成时的几种句型：a. 肯定句：主语+havehas been + 动词的现在分词。如：Ive been sitting here all afternoon.我在这儿坐了一下午。 b. 否定句：主语+havehas not been + 动词的现在分词。 如：He has not been teaching here these years.这些年他并没有在这儿一直教书。c. 一般疑问句及其回答：HaveHas +主语+ been+动词的现在分词肯定回答：Yes, 主语+ havehas;否定回答：No, 主语+ havent (hasnt) . 如：Has she been working here all day?她一整天都在这儿工作吗？Yes, she has. 是的No, she hasnt. 不，她没有。d. 特殊疑问句：疑问词+一般疑问句。如：What book have you been reading recently?最近你在看什么书？【达标拓展】Self check 1 and 2These two activities focus on vocabulary introduced in the unit.Say, first check the words and phrases you know.Then write five new words or phrases in your Vocab-builder.Get students to make their own sentences with the words, preferably sentences that are meaningful.Write a number of students answers for each word on the board. Underline any mistakes and ask students to suggest how to correct the mistake.Answers1.Our class is organizing a talent show to raise money for charity.2.I need extra English lessons. Do you know a good teacher?3.My hobby is collecting old coins.4.I didnt finish writing my test because I ran out of time.5.During the winter I store my summer clothes in bags under my bed. 【当堂检测】.选用所给词的适当形式填空start , leave , have , bring , spend , play , laugh , make , good , interest1. Bill _ to play with computers at the age of 13.He_with computers for around one and a half years.2. His father is very _ in playing bridge(打桥牌).3. He said he was sure he could make him_.4. In a few days hell _for London.5. He _ half an hour on his homework at home every day.6. She isnt so _ at math as yo