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高中必修第二册《Unit 3 The internet》优质课教案教学设计下载
2. Enable students to use the basic phrases structures flexibly.
3. Strengthen students’ great interest in grammar learning.
【教学重难点】
1. Help students to appreciate the function of the Present Perfect Passive Voice in a sentence.
2. Instruct students to write essays using the proper the Present Perfect Passive Voice.
【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 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?
Step 2: Presentation
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
so far 迄今为止 by now 到现在为止
for a long time 很长一段时间
in recent years 在最近几年里
in/during/over 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 door has already been locked.