Unit10现在完成时的用法-人教版英语八年级下册教学

1、Unit 10 Ive had this bike for three years.spend cost take pay的用法辨析(2)理解“现在完成时”的用法人教版英语八级下册 spend cost take pay的用法辨析-How much did the Christmas tree cost?-It cost me 200 yuan.I spent 200 yuan on it.I paid 200 yuan for it.导入新课花费spendcosttakepay知识讲解spend时间、金钱主语一般是人（sb）常用的两种结构：spend(in) doing sth spendo

2、n sthspendHe spent 10 yuan (in) buying the pen He spent 30 minutes on his homework.cost金钱主语一般是物（sth）常用的句型结构：sth cost sb some moneyThe book cost me 12 yuan.take时间常用的句型结构：It takes sb some time to do sthIt took him 2 hours to finish his homework .pay金钱主语一般是人（sb）常用的结构：pay for sth He paid 10 yuan for the

3、 book.1. The Christmas tree costs me 200 yuan.主语通常是事或物，表示花费金钱常见搭配是：sth cost (sb) some money2. I spend 200 yuan on the Christmas tree .主语只能是人，不能是物，可以表示花费时间，也可以表示花费金钱。常见搭配：sb spend some time/money on sth sb spend some time/money (in) doing sthWe spent almost 3 hours (in) decorating it.要点分析3. It took u

4、s almost 3 hours to decorate it.主语通常是形式主语it或物，表示花费时间常见搭配是：It takes sb some time to do sth4. I paid 200 yuan for the Christmas tree.主语通常是人，表示花费金钱常见搭配是：sb pay some money for sth要点分析学以致用It will _her 3 hours to finish the work.This dress _me 300 yuan.He _160 dollars for the bike last month.We_2 hours do

5、ing some cleaning yesterday.takecostpaidspent小结cost spend take pay 表示花费的区别主语 对象 结构cost事物sth cost (sb) moneyspend人sb spend time/money on sthsb spend time/money (in) doing sth takeIt 或事物 sth takes timeIt takes sb time to do sthpay人sb pay money for sth理解“现在完成时”的用法教学过程15理解例句所表达的时间。现在完成时：表示从过去已经开始，一直持续到现

6、在，并且有可能继续下去的动作或状态。分析语境：“我已经在北京生活了30年。”，“自从1988年起，我一直生活在北京。”。结合以上两个示例：从1988年起到现在，我都生活在北京，并且可能以后继续在北京生活。She has lived in Beijing for 30 years.She has lived in Beijing since 1988.教学过程16She has lived in Beijing for 30 years.She has lived in Beijing since 1988.for找出例句中的标志词，并分析不同点。现在完成时常与“for+时间段”，“since+

7、时间点”连用。since一段时间时间点fornowsince教学过程17He _ (be) in bed since 3 days ago.分析语境：ago是一般过去时的标志词，当其前有since时，表示从过去某个时间开始到现在的动作或状态，要用现在完成时。判断下列例句适用于哪个时态？“since+时间段+ago”用于现在完成时He _ (be) sick 3 days ago.has beenwas教学过程18I have learnt English since I was five years old.分析语境：自从我五岁时，我就已经开始学习英语了。（学习英语这个动作是从过去一直持续到现

8、在，并且有可能继续下去。）since引导的从句时态用一般过去时。找出适用于现在完成时的时间标志。“since+从句（用一般过去时）”用于现在完成时教学过程19概念时间标志从过去开始到现在并可能继续下去for+时间段since+过去时间点since+时间段+agosince+过去时的句子记忆技巧：现完携手for与since从过去到现在到将来现在完成时的用法能用表格总结现在完成时的用法吗？教学过程20The boy has prepared his show for 6 months.She hasforThey are the actors who will have their show. P

9、lease guess how long they have prepared for their shows.运用“Sb has done sth for+一段时间. ”进行造句。教学过程21I havesinceDiscuss the topics in groups.I have been a teacher since 2012. And how about you?运用“Sb has done sth since+时间点（从句）. ”进行小组讨论。I have been a girl since I was born.1. I _ here for 10 years.A. live B. am living C. lived