Section A Unit 9

A: What’s this? B: It is a … A: When was it invented? B: It was invented in … /Sorry, I don’t know

1a

Guessing game:  S1: I think the calculator was invented before the computer.  S2: Well, I think the calculator was invented after the computer.  S3: I think the TV was invented before the computer.

1a

1b Listen and match the inventions with the dates. a b e d c d a b e c

1c A: When was the telephone invented ? 1.B: I think it was invented in 1876.

Grammar  the simple past tense of the passive voice :  1. formation  S ＋ was/were ＋ p. p ＋ …  The telephone was invented in 1876.

 2.forms:  e. g The telephone was invented in ____________________________. (negative form)  ____________________________? (general question)  _____________________________?  (special question) ________ The telephone was not invented in 1876 Was the telephone invented in 1876 When was the telephone invented

Usage of the passive voice (past tense)  It is often used with past time.  yesterday, last week, last year, in 1987 etc.  e, g My bicycle was lent to Tom last week.

Homework:  Fill in the blanks with the correct forms of the verbs  ⑴ The pen ______(buy) yesterday by my mother.  ⑵ The TV _______ (invent) in  ⑶ -___ the novel _______ by Lunxun?(write) -Yes, it was.  ⑷ These cars _______(make) last year.  ⑸ My pen _______ (not lose) last week.