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(1) Improve their group conscience by working together
Teaching key points and difficult points:
Have a good command of the structure and usage of present perfect tense
Words and phrases : yet recently past over the past century learn more about
Teaching methods: Inductive and deductive methods; explanation; communicative approach; task-based language teaching
Teaching Procedures
Designing aims
Step1: Lead in
Free talk
(1) How long has Mr Chen lived in Sunshine Town?
(2) What has the government done to part of the town center?
(3) Why does Mr Chen think it is impossible to see his old friends as often as before ?
2. Present perfect tense from their own answers.
提问reading 部分的内容，导入新课.
Step2: Presentation
What is present perfect tense?
We use the present perfect tense to talk about actions that started in the past and continue to the present, or the actions that happened in the past and have connection with the present. We also use the present perfect tense to talk about how many times actions have happened till now.
Discussion:
What new structure can you find in these sentences?
We make negative statements in the present perfect tense like this:
have not = haven’t
has not = hasn’t
Practice
We ask and answer questions using the present perfect tense like this:
Practice
Use the sentences the students have seen before to teach the rules of Past Participle.
Know some important expressions of adverbial of time
举例子，学生总结与教师讲解相结合，讲解现在完成时得概念。
学生自己归纳结构，而不是教师简单的教授，再加上相关的练习，更符合认识规律
Step3: Practice