英语八年级下册Unit 1 Past and PresentGrammar学案及答案

这是一份英语八年级下册Unit 1 Past and PresentGrammar学案及答案，共4页。学案主要包含了学习目标，导学过程等内容，欢迎下载使用。
Unit 1  Past and presentGrammar【学习目标】 1.掌握现在完成时的基本结构、基本用法和动词过去分词的变化规律。2.能够在语境中正确运用现在完成时。3.理解并运用常和现在完成时连用的时间表达方式。  【导学过程】一、自主预习（3分钟，正确读音，书写工整）写出下列单词的过去分词come _________2.hold_________ 3.lend_________ 4.catch_________ 5.be_________draw _________7.carry _________8.stop _________9.visit_________ 10. live_________二、课堂探究Step1 Lead in1.T: When did you have breakfast?    T: When did you study in this school?2.Show a picture of TFboys and present the present perfect tenseT: Do you know them? Have you heard their songs before?Step 2 Presentation 现在完成时用法：She has had breakfast.用法1：现在完成时表动作发生在过去并对现在造成影响。He has lived here for two years.用法2：现在完成时表动作发生在过去并一直持续到现在，有可能继续持续下去。They have been to Hong Kong once.用法3：现在完成时表到现在为止某动作发生了多少次。2.Structure of the present perfect tensesb + have/has + done 3. Work out the rule阅读五个句子，讨论并完成问题
1） She has helped the children with their lessons for an hour.
2.）They have learned English for three years.
3） I /we have not told it to him.
4） Jim has not seen the film before.
5）Has he finished his homework yet?   Yes, he has./No, he hasn’t.    
1）现在完成时结构
肯定：______+_______+_____              
  否定：______ + ______+______
  一般疑问句：把________提前
  肯定回答 ______ / 否定回答_______           
2）have not 可缩写成____has not 可缩写成 ___4. Form the past participles of regular verbs 1）大多数动词末尾加_____2)结尾是e的动词加_______3)结尾是“辅音字母+y”结尾的动词________4)结尾是元音+y结尾的动词____________Step 3 PracticeFinish the exercises on page 14.Step 4 现在完成时的时间状语1.  副词already和yet。already一般用于肯定句中，yet一般用于否定句和 疑问句中。2. 副词ever 和never。多用于否定或疑问句中，表示“曾经”或“从未“等。 3. 用表示到说话为止的过去时间状语,  如 : just,  before,   recently等。三、当堂反馈 小组PK测验（一）选择题(    )1. I have finished my homework ____.         Have you finished your homework  ____?yet, yet    B. yet, already   C. already, yet   D. already, already(    )2. I haven’t seen Kate ____ 4 months.        A. Already    B. since        C. for          D. yet(    )3. He has ____ seen the film Harry Potter. So he knows nothing about it.        A. already    B. ever         C. never        D.  yet  (    ) 4. She has been ill in bed ____ two days ago.        A. since      B. in           C. during       D. for            解析：Grammar一、自主预习come   2.held   3.lent  4.caught  5.been6.drawn  7.carried   8.stopped  9.visited  10. lived三、当堂反馈1.C  already用于肯定句，yet用于否定句或疑问句。故选C。2.C  for+一段时间 用于现在完成时。由“4months”可知是一段时间，故选C。3.C  由下文“he knows nothing about it”可知他没有看过这部电影。A. already 已经 B. ever 曾经 C. never 从不  D.  yet 还，故选C。4.A   since+一段时间+ago 用于现在完成时，故选A。