江苏省宜兴市屺亭中学八年级英语下册《Unit 3 Online travel》Period 5 Grammar（1）教案 牛津版.doc

unit 3 online travelperiod 5 grammar（1）teaching aims:step 1 greeting & warming up step 2 presentingwe use active voice when it is important to know who performs the action.e.g. daniel bought a new computer. (we want to know who bought a new computer)explain that we use the passive voice when we are interested in the thing which was done rather than the person who did it.we can use the passive voice when1. it is obvious who performs the action2. we do not know or cannot remember who performed the action.3. we think the action is more important than the person who performs the action.step 3 teaching1. ask ss to read the three examples of the passive voice and to circle the verb in each one (are taught, was sold and are sold)2. in each of the examples, ask ss to identify the doer of the verb, e.g.,word processing skills are taught in our computer lessons. (the teacher, presumably)the printer was sold already. ( we do not know who did it.) educational cd-roms are sold in many countries. (many different people)3.for stronger classes, ask students to try to change the example sentences into the passive voice. e.g. the teacher teaches word processing skills in our computer lessons.someone sold the printer yesterday.shops sell educational cd-roms in many countries. 4. we form the passive voice in the simple present tense and the simple past tense like this. step 4 exercises1. finish the exercise on page 46 “a telephone conversation”2. do some exercises (1) a thief _ (catch) yesterday evening.(2)when _ the bridge _? (build) - in 1990.(3)football _(play) by the young man every day.(4)my mum waters flowers every day.flowers _ _ by my mum every day.(5)the headmaster showed the foreign visitors around our school.the foreign visitors _ _ around our school.(6)everyone knows the great wall.the great wall _ _ by everyone(7)tom spent