Unit 3 The Internet
Discovering Useful Structure
【学习目标】
1. To review the basic usages of the Present Perfect Passive Voice.
2. To learn to use some special cases concerning the Present Perfect Passive Voice.
【学习重难点】
1. To appreciate the function of the Present Perfect Passive Voice in a sentence.
2. To write essays using the proper the Present Perfect Passive Voice.
【学习过程】
Step 1: 课前诊断
一、观察下列句子特点，总结共同点。
1．(教材P28) Much has been written about the wonders of the World Wide Web.
2．(教材P28) But the Internet has done much more for people than simply make life more convenient.
3．(教材P28) Many people have been helped by the club.
4．(教材P28) She no longer feels lonely, and her company has become quite successful.
5．(教材P32) Today I thought I’d blog about a question that has been asked many times—how do you stay safe online and avoid bad experiences on the Internet?
共同点：_________________________________________________________
二、知识梳理
1. 常与现在完成时连用的时间状语有哪些？
2. 现在完成时态的意义是什么？
（1）现在完成时的被动语态强调一个发生在过去的__________，动作已_________并强调对现在造成的_________，主语和谓语之间为_________关系。
The door has already______________________ (lock). 门早已经被锁上了。
I have _________________ (employ) at the job since 2015. 自从2015年，我就做这份工作。
（2）基本构成
①现在完成时的被动语态的结构为_________________________________
A lot of money ______________________ (spend) to protect the old temple by now.
These trees ______________________________ (water) lately.
②带有双宾语的动词，如give, send, bring, take, teach, show, tell, make, sing, write, read, sell, buy, pay, lend, pass, promise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 book.
→______________________________________________________________
Step 3 小试牛刀
时态填空。
1.He _______________________ (select) to take part in the sports meeting．
2.The ink___________________________________ (remove) from his overcoat．
3. Has the date for the next meeting____________________________ (decide)?
4. How long has the battery________________________________ (change)?
句型转换：
The children have already been told the good 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 课后巩固
1. They _______________________ (sell) ten apartments in the past one hour.
2. He ______________________ (buy) a present when she visited Xinjiang.
3. He ______________________ already ______________________ (ask) to help you.
4. The company _________________ (make) its workers work
5. A notice _________________ already _________________ (put up) on the wall.
6. Since we realized that we should study hard, our time _________________ (make) full use of.
7. These streets_________________ (not sweep) for two days.
8. How long __________________ the book __________________ (keep)?
9. How long ago _________________ the picture _________________ (take)?
10. These goods _________________ (not ship) abroad yet.
II.完成句子：
1. From what ____________ (已被讨论过的) above, we can draw the conclusion that parents are our best teachers.
2. Fortunately, a lot of measures _______________ (已被采取了) to deal with the problem.
3. Two suggestions _________________ (已被提供) by our classmates.
4. People's health _________________ (受到了很大的影响) by air, noise and water.
5. In spite of these changes, the liberation of women_________________ (没有被完全认识到).
Step 5: Homework
完成课后练习。