人教版 (2019)必修 第二册Unit 3 The internet优秀教案设计

这是一份人教版 (2019)必修 第二册Unit 3 The internet优秀教案设计，共4页。教案主要包含了教学目标，教学重难点，教学过程等内容，欢迎下载使用。

Discvering Useful Structure


【教学目标】


1. Guide students t review the basic usages f the Present Perfect Passive Vice.


2. Lead students t learn t use sme special cases cncerning the Present Perfect Passive Vice flexibly.


2. Enable students t use the basic phrases structures flexibly.


3. Strengthen students’ great interest in grammar learning.


【教学重难点】


1. Help students t appreciate the functin f the Present Perfect Passive Vice in a sentence.


2. Instruct students t write essays using the prper the Present Perfect Passive Vice.


【教学过程】


Step 1: Reviewing


引导学生观察下列句子特点，总结共同点。


1．(教材P28) Much has been written abut the wnders f the Wrld Wide Web．


2．(教材P28) But the Internet has dne much mre fr peple than simply make life mre cnvenient．


3．(教材P28) Many peple have been helped by the club．


4．(教材P28) She n lnger feels lnely, and her cmpany has becme quite successful．


5．(教材P32) Tday I thught I’d blg abut a questin that has been asked many times—hw d yu stay safe nline and avid bad experiences n the Internet?


Step 2: Presentatin


一、常与现在完成时连用的时间状语有：


already已经yet 已经


recently/lately 最近since then 从那时起


ever since 自那以来ever 曾经


s far迄今为止by nw到现在为止


fr a lng time 很长一段时间


in recent years 在最近几年里


in/during/ver the past/last years在过去的几年里


二、现在完成时态的意义。


1．现在完成时的被动语态强调一个发生在过去的被动性的动作，动作已完成并强调对现在造成的影响或结果，主语和谓语之间为被动关系。


The dr has already been lcked.


门早已经被锁上了。


I have been emplyed at the jb since 2015.


自从2015年，我就做这份工作。


2．基本构成


现在完成时的被动语态的结构为has/have been dne。


A lt f mney has been spent t prtect the ld temple by nw.


到目前为止已投入了大笔钱来保护这座古庙。


These trees have been watered lately.


那些树最近已浇水。


2)带有双宾语的动词，如give, send, bring, take, teach, shw, tell, make, sing, write, read, sell, buy, pay, lend, pass, prmise等，变为被动语态时，一般将间接宾语变为被动语态的主语，若将直接宾语变为被动语态的主语时，间接宾语前面要用相应的介词。


We have given him the bk.


→He has been given the bk.


→The bk has been given t him.


现在完成时的被动语态的用法


1．现在完成时的被动语态同它的主动语态一样，强调过去的动作对现在造成的影响或结果，通常与already, yet, just, never, recently等副词连用。


◆The machine has already been repaired．


机器已经修好了。


2．表示一个被动的动作或状态开始于过去，持续到现在，并可能持续下去，常与fr或since引导的时间状语连用，或用于“Hw lng…？”句型中。


◆Financial prblems f the cmpany have been discussed fr nearly tw hurs．


公司的财务问题已被讨论了近两个小时了。


3．用在时间或条件状语从句中，表示将来某时已完成的动作，即用现在完成时的被动语态代替将来完成时的被动语态。


◆Yu shuldn’t leave schl befre yur hmewrk has been finished．


在你的作业没完成之前你不应该离开学校。


使用现在完成时的被动语态要注意的问题


1．现在完成时的被动语态、现在进行时的被动语态及一般过去时的被动语态的区别


The machine has been repaired. (说明动作发生在过去，对现在有影响，“现在修好了”)


The machine is being repaired nw. (说明动作正在进行)


The machine was repaired yesterday. (只说明动作发生在 过去)


2．非延续性动词，如brrw, finish, begin, start, buy, marry, pen, jin等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，则要改换动词或时态，例如：


工程已开始三个月了。


The prject has been started fr three mnths. (F)


The prject has been n fr three mnths. (T)


3.带有复合宾语的动词变为被动语态时，若宾语补足语为省略t的不定式充当时，在被动语态中需将省掉的t加上。


The bss has made his cmpany ffer mre chances fr peple t wrk.


→His cmpany has been made t ffer mre chances fr peple t wrk.


(4)动词短语是一个不可分割的整体，在被动语态中要保持其完整性，其中的介词或副词不可省略。


It's said that the prblem has been lked int.


据说已经调查了这个问题。


总结：现在完成时的被动语态的结构


Step 3 Drill


时态填空。


1.He _______________________ (select) t take part in the sprts meeting．


2.The ink___________________________________ (remve) frm his vercat．


3. Has the date fr the next meeting____________________________ (decide)?


4. Hw lng has the battery________________________________ (change)?


句型转换：


The children have already been tld the gd news．


1.上面的句子变为否定句。


________________________________________________________


2.将上面的句子变为一般疑问句。


________________________________________________________


3.对上面句子中的The children进行提问。


_______________________________________________________


Step 4 Hmewrk:


完成课后练习。肯定式
主语＋have/has been dne…
否定式
主语＋have/has nt been dne…
一般疑问式
Have/Has＋主语＋been dne…？
特殊疑问式
疑问词＋have/has＋主语＋been dne…？