| Module 4 Great Scientists Period 4 Teaching contents: Grammar 1 & 2, Revision of the passive voice and by+v-ing form. Main and difficult teaching points: To grasp the structure of the sentences in different tenses in passive voice, and the fun_ction and usage of by+v-ing form. Teaching procedures: Step 1 Revision Revise some new words and phrases learned in the previous period. Step 2 Grammar 1 Revision of the Passive Voice 1. Lead in the grammar item by reading and examining the sentences on P33 in TB and answer the questions on P34. 2. Task 1 Write down the predicate part of the 8 tenses in active voice. 3. Talk about how to change a sentence in active voice into one in passive voice by using the following illustration. Active voice: Subject + Vt. (or transitive verbal phrase) + Object Passive voice: Subject + (auxiliary/modal verb) + be + Vt.(P.P.) + by + Object be—be/am/is/are/was/were/being/been | | 主动语态 | 被动语态 | | 一般现在时 | amisare do/does(V.V.s) | amisare+done(V. p.p) | | 一般将来时 | willbe going tobe (about)to+do(V.) | will+be+done(V. p.p) | | 一般过去时 | waswere did(V.-ed) | waswere+done(V. p.p) | | 现在进行时 | amisare+doing(V.-ing) | amisare+being+done(V. p.p) | | 过去进行时 | waswere+doing(V.-ing) | waswere+being+done(V.p.p) | | 现在完成时 | havehas+done(V. p.p.) | havehas+been+done(V. p.p) | | 过去完成时 | had+done(V. p.p.) | had+been+done(V. p.p.) | | 情态动词 | 情态动词+V. | 情态动词+be+done(V. p.p.) | | 过去将来时 | would/should +V. | would/should be + done(V. p.p.) | 4. Task 2 Read through the grammar explanations on P44 in RB. 5. (T) Emphasize the main points and attentions of this grammar item with the help of PPT and RB (被动语态中感官动词后使役动词前的不定式符号to，主动表被动的情况). 6. Grammar exercises in TB. Step 3 Grammar 2 by+v-ing form 1. Explain the fun_ction and usage of v-ing form with the help of PPT and the explanations in RB. 2. Complete the grammar exercises on P35 in RB. Homework: Read more about the two grammar items and complete all the grammar exercises in TB & RB. Tags：外研版,Book4Module4GreatScientistsPeriod4,教案 | 
