Unit3 Computers Book2
_____: the analytical machine was made by charles babbage.
1936: ___________________________________________________________
1960s: ___________________________________________________________
_____: the first family of computers connected to each other.
1970s:___________________________________________________________
now: ___________________________________________________________
step 5.interview
as a reporter, you will interview mr. computer.
step 6.homework
1.preview the second text (sb,p22)
2.reading task(wb,p58)
blackboard design:
unit3 computers book2
period 4 grammar
liu juan
teaching aim: grasp the usages of the present perfect passive voice and use them freely
important and difficult points:
the usages of the present perfect passive voice
the present perfect passive voice
現(xiàn)在完成時(shí)被動(dòng)語(yǔ)態(tài)由”has/have + been + 及物動(dòng)詞的過(guò)去分詞”構(gòu)成。使用現(xiàn)在完成時(shí)被動(dòng)語(yǔ)態(tài)要注意以下幾點(diǎn)：
1. 只帶有一個(gè)賓語(yǔ)的動(dòng)詞變?yōu)楸粍?dòng)語(yǔ)態(tài)時(shí)，將主動(dòng)語(yǔ)態(tài)的賓語(yǔ)變?yōu)楸粍?dòng)語(yǔ)態(tài)的主語(yǔ)。例如：
we have built many houses in the past ten years.
→many houses have been built in the past ten years.
2. 帶有雙賓語(yǔ)的動(dòng)詞，如give, send, bring, take, teach, show, tell, make, sing, write, read, sell, buy, tell, pay, lend, pass, promise等，變?yōu)楸粍?dòng)語(yǔ)態(tài)時(shí)，可將其中一個(gè)賓語(yǔ)變?yōu)橹髡Z(yǔ)，另一個(gè)保留不動(dòng)。例如：
we have given him the book.
→he has been given the book.
→the book has been given to him.
3. 帶有復(fù)合賓語(yǔ)的動(dòng)詞變?yōu)楸粍?dòng)語(yǔ)態(tài)時(shí)，只能將賓語(yǔ)變?yōu)橹髡Z(yǔ)，原來(lái)的賓補(bǔ)改為主語(yǔ)補(bǔ)足語(yǔ)。原來(lái)省略to的不定式作賓補(bǔ)的，被動(dòng)語(yǔ)態(tài)中要用帶to的不定式。例如：
i have told them to help you.→they have been told to help you.
i have made her work hard.→she has been made to work hard.
4. 短語(yǔ)動(dòng)詞變?yōu)楸粍?dòng)語(yǔ)態(tài)時(shí)，要注意保持短語(yǔ)的完整性，動(dòng)詞后原有的介詞或副詞不可遺漏。例如：
they have referred to the books.→the books have been referred to (by them).
he has thought of a way of dong it.→a way of doing it has been thought of.
1.hundreds of jobs ________ if the factory closes.（全國(guó)春招）
a. lose b. will be lost c. are lost d. will lose
[解析]本句的意思是：如果工廠倒閉，那么將失去數(shù)百個(gè)工作崗位。lose a job意為”失業(yè)”。工作將被失去，要用將來(lái)時(shí)態(tài)的被動(dòng)語(yǔ)態(tài)，因此排除答案a、c和d，答案選b。
2.the mayor of beijing says that all construction work for the beijing olympics ________ by . (北京)