英语：unit3 amazing people-grammar and usage学案（牛津译林版必修2）

Unit3 Grammar and usage Period One  Present perfect tense

Teaching aim:

To give a brief introduction to the present perfect tense

Teaching procedures:

1 Go over the news story on Page 2 and find the sentences using the present perfect tense.

  Please explain why the tense is used in these sentences.

2 The form of the present perfect tense

3 Talk about the uses of the present perfect tense

处理 SSI 文件时出错