Learning about Language第二课时 公开课

必修二

unit3 Computers 第四课时Learning about Language 教学目标

1. To know something about computers. 2. To learn and talk about computers.

教学重点

(1)Some important words and expressions. （2）语法：现在完成时的被动语态

教学难点

(1) To make up some sentences with the new words. (2)Translate some sentences using the new grammar. 教学方法

Individual, pair or group work to make every student work in class. 教具准备:A recorder,small blackboard 教学过程和方式

Step 1. Learning about Language Fill the blanks and check the answers altogether. (1) Snow is _______(常见的) in cold countries. (2). Can you _______(估计)the cost of this journey?

(3). The _________(分析) of the samples on the murder spot showed some valuable clues

to the police. (4) I shall go and see him ________(无论如何) (5) He's some kind of ________(数学)genius. Step2:Grammar

(1) Presentation

① Revise the grammar: the present passive voice. am / is / are + done ② Revise the grammar: the present perfect voice. Have/has + done

③ Explain the grammar: the present perfect passive voice. ——>Have/has been +done (2) Practice ① Fill the blanks with the correct tense. A. –The window

is

dirty.

It _______

____ (not clean) for weeks. B. ---George and Lucy got married last week. Did they have a big wedding? ---No, I __________________ (not invite).

Did they have a big wedding? .

C. ---Have you moved to your new apartment?

---Not yet, it _______________(paint) at the moment.

D. too much. The students have been made __________(not play) computer games E.

Since then, all different kinds of information ____________________(处理)by

computers. F.

He doesn’t mind the story _____________(编造) in this way. Suggested Answers:

A. hasn’t been cleaned

B. hadn’t been invited

C. is being painted

D.

not to play

E. has been dealt with

F. being made up

② Translating following sentences into Chinese

A. A new personal computer has been bought. B. Many problems ahs been found with our new computer. C. A PC has been built the way we wanted. D. Our computer has just jointed to the Internet. E. The computer ahs been used every day since we bought it. F. A lot of e-mails have been written on the computer in the past year. Step 3. 作业设计：

Finish Ex1 (P21), Ex2 (P21) and Ex3 (P21).